mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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57127645d7
Rework of the prandom device with introduction of a new SHA-512 based NIST SP 800-90 conform deterministic random bit generator. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
494 lines
15 KiB
C
494 lines
15 KiB
C
/*
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* Cryptographic API.
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*
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* Support for s390 cryptographic instructions.
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*
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* Copyright IBM Corp. 2003, 2015
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* Author(s): Thomas Spatzier
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* Jan Glauber (jan.glauber@de.ibm.com)
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* Harald Freudenberger (freude@de.ibm.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef _CRYPTO_ARCH_S390_CRYPT_S390_H
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#define _CRYPTO_ARCH_S390_CRYPT_S390_H
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#include <asm/errno.h>
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#include <asm/facility.h>
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#define CRYPT_S390_OP_MASK 0xFF00
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#define CRYPT_S390_FUNC_MASK 0x00FF
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#define CRYPT_S390_PRIORITY 300
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#define CRYPT_S390_COMPOSITE_PRIORITY 400
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#define CRYPT_S390_MSA 0x1
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#define CRYPT_S390_MSA3 0x2
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#define CRYPT_S390_MSA4 0x4
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#define CRYPT_S390_MSA5 0x8
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/* s390 cryptographic operations */
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enum crypt_s390_operations {
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CRYPT_S390_KM = 0x0100,
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CRYPT_S390_KMC = 0x0200,
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CRYPT_S390_KIMD = 0x0300,
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CRYPT_S390_KLMD = 0x0400,
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CRYPT_S390_KMAC = 0x0500,
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CRYPT_S390_KMCTR = 0x0600,
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CRYPT_S390_PPNO = 0x0700
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};
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/*
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* function codes for KM (CIPHER MESSAGE) instruction
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* 0x80 is the decipher modifier bit
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*/
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enum crypt_s390_km_func {
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KM_QUERY = CRYPT_S390_KM | 0x0,
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KM_DEA_ENCRYPT = CRYPT_S390_KM | 0x1,
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KM_DEA_DECRYPT = CRYPT_S390_KM | 0x1 | 0x80,
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KM_TDEA_128_ENCRYPT = CRYPT_S390_KM | 0x2,
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KM_TDEA_128_DECRYPT = CRYPT_S390_KM | 0x2 | 0x80,
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KM_TDEA_192_ENCRYPT = CRYPT_S390_KM | 0x3,
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KM_TDEA_192_DECRYPT = CRYPT_S390_KM | 0x3 | 0x80,
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KM_AES_128_ENCRYPT = CRYPT_S390_KM | 0x12,
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KM_AES_128_DECRYPT = CRYPT_S390_KM | 0x12 | 0x80,
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KM_AES_192_ENCRYPT = CRYPT_S390_KM | 0x13,
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KM_AES_192_DECRYPT = CRYPT_S390_KM | 0x13 | 0x80,
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KM_AES_256_ENCRYPT = CRYPT_S390_KM | 0x14,
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KM_AES_256_DECRYPT = CRYPT_S390_KM | 0x14 | 0x80,
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KM_XTS_128_ENCRYPT = CRYPT_S390_KM | 0x32,
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KM_XTS_128_DECRYPT = CRYPT_S390_KM | 0x32 | 0x80,
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KM_XTS_256_ENCRYPT = CRYPT_S390_KM | 0x34,
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KM_XTS_256_DECRYPT = CRYPT_S390_KM | 0x34 | 0x80,
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};
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/*
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* function codes for KMC (CIPHER MESSAGE WITH CHAINING)
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* instruction
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*/
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enum crypt_s390_kmc_func {
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KMC_QUERY = CRYPT_S390_KMC | 0x0,
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KMC_DEA_ENCRYPT = CRYPT_S390_KMC | 0x1,
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KMC_DEA_DECRYPT = CRYPT_S390_KMC | 0x1 | 0x80,
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KMC_TDEA_128_ENCRYPT = CRYPT_S390_KMC | 0x2,
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KMC_TDEA_128_DECRYPT = CRYPT_S390_KMC | 0x2 | 0x80,
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KMC_TDEA_192_ENCRYPT = CRYPT_S390_KMC | 0x3,
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KMC_TDEA_192_DECRYPT = CRYPT_S390_KMC | 0x3 | 0x80,
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KMC_AES_128_ENCRYPT = CRYPT_S390_KMC | 0x12,
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KMC_AES_128_DECRYPT = CRYPT_S390_KMC | 0x12 | 0x80,
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KMC_AES_192_ENCRYPT = CRYPT_S390_KMC | 0x13,
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KMC_AES_192_DECRYPT = CRYPT_S390_KMC | 0x13 | 0x80,
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KMC_AES_256_ENCRYPT = CRYPT_S390_KMC | 0x14,
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KMC_AES_256_DECRYPT = CRYPT_S390_KMC | 0x14 | 0x80,
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KMC_PRNG = CRYPT_S390_KMC | 0x43,
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};
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/*
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* function codes for KMCTR (CIPHER MESSAGE WITH COUNTER)
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* instruction
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*/
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enum crypt_s390_kmctr_func {
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KMCTR_QUERY = CRYPT_S390_KMCTR | 0x0,
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KMCTR_DEA_ENCRYPT = CRYPT_S390_KMCTR | 0x1,
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KMCTR_DEA_DECRYPT = CRYPT_S390_KMCTR | 0x1 | 0x80,
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KMCTR_TDEA_128_ENCRYPT = CRYPT_S390_KMCTR | 0x2,
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KMCTR_TDEA_128_DECRYPT = CRYPT_S390_KMCTR | 0x2 | 0x80,
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KMCTR_TDEA_192_ENCRYPT = CRYPT_S390_KMCTR | 0x3,
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KMCTR_TDEA_192_DECRYPT = CRYPT_S390_KMCTR | 0x3 | 0x80,
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KMCTR_AES_128_ENCRYPT = CRYPT_S390_KMCTR | 0x12,
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KMCTR_AES_128_DECRYPT = CRYPT_S390_KMCTR | 0x12 | 0x80,
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KMCTR_AES_192_ENCRYPT = CRYPT_S390_KMCTR | 0x13,
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KMCTR_AES_192_DECRYPT = CRYPT_S390_KMCTR | 0x13 | 0x80,
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KMCTR_AES_256_ENCRYPT = CRYPT_S390_KMCTR | 0x14,
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KMCTR_AES_256_DECRYPT = CRYPT_S390_KMCTR | 0x14 | 0x80,
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};
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/*
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* function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
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* instruction
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*/
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enum crypt_s390_kimd_func {
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KIMD_QUERY = CRYPT_S390_KIMD | 0,
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KIMD_SHA_1 = CRYPT_S390_KIMD | 1,
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KIMD_SHA_256 = CRYPT_S390_KIMD | 2,
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KIMD_SHA_512 = CRYPT_S390_KIMD | 3,
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KIMD_GHASH = CRYPT_S390_KIMD | 65,
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};
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/*
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* function codes for KLMD (COMPUTE LAST MESSAGE DIGEST)
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* instruction
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*/
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enum crypt_s390_klmd_func {
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KLMD_QUERY = CRYPT_S390_KLMD | 0,
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KLMD_SHA_1 = CRYPT_S390_KLMD | 1,
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KLMD_SHA_256 = CRYPT_S390_KLMD | 2,
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KLMD_SHA_512 = CRYPT_S390_KLMD | 3,
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};
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/*
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* function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
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* instruction
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*/
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enum crypt_s390_kmac_func {
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KMAC_QUERY = CRYPT_S390_KMAC | 0,
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KMAC_DEA = CRYPT_S390_KMAC | 1,
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KMAC_TDEA_128 = CRYPT_S390_KMAC | 2,
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KMAC_TDEA_192 = CRYPT_S390_KMAC | 3
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};
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/*
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* function codes for PPNO (PERFORM PSEUDORANDOM NUMBER
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* OPERATION) instruction
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*/
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enum crypt_s390_ppno_func {
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PPNO_QUERY = CRYPT_S390_PPNO | 0,
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PPNO_SHA512_DRNG_GEN = CRYPT_S390_PPNO | 3,
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PPNO_SHA512_DRNG_SEED = CRYPT_S390_PPNO | 0x83
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};
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/**
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* crypt_s390_km:
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* @func: the function code passed to KM; see crypt_s390_km_func
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Executes the KM (CIPHER MESSAGE) operation of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for encryption/decryption funcs
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*/
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static inline int crypt_s390_km(long func, void *param,
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u8 *dest, const u8 *src, long src_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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register u8 *__dest asm("4") = dest;
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int ret;
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asm volatile(
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"0: .insn rre,0xb92e0000,%3,%1\n" /* KM opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
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: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_kmc:
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* @func: the function code passed to KM; see crypt_s390_kmc_func
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for encryption/decryption funcs
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*/
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static inline int crypt_s390_kmc(long func, void *param,
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u8 *dest, const u8 *src, long src_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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register u8 *__dest asm("4") = dest;
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int ret;
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asm volatile(
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"0: .insn rre,0xb92f0000,%3,%1\n" /* KMC opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
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: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_kimd:
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* @func: the function code passed to KM; see crypt_s390_kimd_func
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* @param: address of parameter block; see POP for details on each func
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation
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* of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for digest funcs
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*/
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static inline int crypt_s390_kimd(long func, void *param,
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const u8 *src, long src_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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int ret;
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asm volatile(
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"0: .insn rre,0xb93e0000,%1,%1\n" /* KIMD opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "=d" (ret), "+a" (__src), "+d" (__src_len)
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: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_klmd:
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* @func: the function code passed to KM; see crypt_s390_klmd_func
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* @param: address of parameter block; see POP for details on each func
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for digest funcs
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*/
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static inline int crypt_s390_klmd(long func, void *param,
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const u8 *src, long src_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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int ret;
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asm volatile(
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"0: .insn rre,0xb93f0000,%1,%1\n" /* KLMD opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "=d" (ret), "+a" (__src), "+d" (__src_len)
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: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_kmac:
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* @func: the function code passed to KM; see crypt_s390_klmd_func
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* @param: address of parameter block; see POP for details on each func
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation
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* of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for digest funcs
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*/
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static inline int crypt_s390_kmac(long func, void *param,
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const u8 *src, long src_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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int ret;
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asm volatile(
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"0: .insn rre,0xb91e0000,%1,%1\n" /* KLAC opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "=d" (ret), "+a" (__src), "+d" (__src_len)
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: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_kmctr:
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* @func: the function code passed to KMCTR; see crypt_s390_kmctr_func
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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* @counter: address of counter value
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*
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* Executes the KMCTR (CIPHER MESSAGE WITH COUNTER) operation of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of processed
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* bytes for encryption/decryption funcs
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*/
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static inline int crypt_s390_kmctr(long func, void *param, u8 *dest,
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const u8 *src, long src_len, u8 *counter)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param;
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register const u8 *__src asm("2") = src;
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register long __src_len asm("3") = src_len;
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register u8 *__dest asm("4") = dest;
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register u8 *__ctr asm("6") = counter;
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int ret = -1;
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asm volatile(
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"0: .insn rrf,0xb92d0000,%3,%1,%4,0\n" /* KMCTR opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
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: "+d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest),
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"+a" (__ctr)
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: "d" (__func), "a" (__param) : "cc", "memory");
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if (ret < 0)
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return ret;
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return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
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}
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/**
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* crypt_s390_ppno:
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* @func: the function code passed to PPNO; see crypt_s390_ppno_func
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @dest_len: size of destination memory area in bytes
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* @seed: address of seed data
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* @seed_len: size of seed data in bytes
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*
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* Executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
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* operation of the CPU.
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*
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* Returns -1 for failure, 0 for the query func, number of random
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* bytes stored in dest buffer for generate function
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*/
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static inline int crypt_s390_ppno(long func, void *param,
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u8 *dest, long dest_len,
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const u8 *seed, long seed_len)
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{
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register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
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register void *__param asm("1") = param; /* param block (240 bytes) */
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register u8 *__dest asm("2") = dest; /* buf for recv random bytes */
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register long __dest_len asm("3") = dest_len; /* requested random bytes */
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register const u8 *__seed asm("4") = seed; /* buf with seed data */
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register long __seed_len asm("5") = seed_len; /* bytes in seed buf */
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int ret = -1;
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asm volatile (
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"0: .insn rre,0xb93c0000,%1,%5\n" /* PPNO opcode */
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"1: brc 1,0b\n" /* handle partial completion */
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" la %0,0\n"
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"2:\n"
|
|
EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
|
|
: "+d" (ret), "+a"(__dest), "+d"(__dest_len)
|
|
: "d"(__func), "a"(__param), "a"(__seed), "d"(__seed_len)
|
|
: "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? dest_len - __dest_len : 0;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_func_available:
|
|
* @func: the function code of the specific function; 0 if op in general
|
|
*
|
|
* Tests if a specific crypto function is implemented on the machine.
|
|
*
|
|
* Returns 1 if func available; 0 if func or op in general not available
|
|
*/
|
|
static inline int crypt_s390_func_available(int func,
|
|
unsigned int facility_mask)
|
|
{
|
|
unsigned char status[16];
|
|
int ret;
|
|
|
|
if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
|
|
return 0;
|
|
if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
|
|
return 0;
|
|
if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
|
|
return 0;
|
|
if (facility_mask & CRYPT_S390_MSA5 && !test_facility(57))
|
|
return 0;
|
|
|
|
switch (func & CRYPT_S390_OP_MASK) {
|
|
case CRYPT_S390_KM:
|
|
ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KMC:
|
|
ret = crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KIMD:
|
|
ret = crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KLMD:
|
|
ret = crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KMAC:
|
|
ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KMCTR:
|
|
ret = crypt_s390_kmctr(KMCTR_QUERY, &status,
|
|
NULL, NULL, 0, NULL);
|
|
break;
|
|
case CRYPT_S390_PPNO:
|
|
ret = crypt_s390_ppno(PPNO_QUERY, &status,
|
|
NULL, 0, NULL, 0);
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
if (ret < 0)
|
|
return 0;
|
|
func &= CRYPT_S390_FUNC_MASK;
|
|
func &= 0x7f; /* mask modifier bit */
|
|
return (status[func >> 3] & (0x80 >> (func & 7))) != 0;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_pcc:
|
|
* @func: the function code passed to KM; see crypt_s390_km_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
*
|
|
* Executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) operation of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for success.
|
|
*/
|
|
static inline int crypt_s390_pcc(long func, void *param)
|
|
{
|
|
register long __func asm("0") = func & 0x7f; /* encrypt or decrypt */
|
|
register void *__param asm("1") = param;
|
|
int ret = -1;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb92c0000,0,0\n" /* PCC opcode */
|
|
"1: brc 1,0b\n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
|
|
: "+d" (ret)
|
|
: "d" (__func), "a" (__param) : "cc", "memory");
|
|
return ret;
|
|
}
|
|
|
|
#endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */
|