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crypto: sparc/camellia - convert to skcipher API
Convert the glue code for the SPARC64 Camellia opcodes implementations of Camellia-ECB and Camellia-CBC from the deprecated "blkcipher" API to the "skcipher" API. This is needed in order for the blkcipher API to be removed. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers
Herbert Xu
parent
64db5e7439
commit
c72a26ef6b
@ -12,6 +12,7 @@
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#include <linux/mm.h>
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#include <linux/types.h>
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#include <crypto/algapi.h>
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#include <crypto/internal/skcipher.h>
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#include <asm/fpumacro.h>
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#include <asm/pstate.h>
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@ -52,6 +53,12 @@ static int camellia_set_key(struct crypto_tfm *tfm, const u8 *_in_key,
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return 0;
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}
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static int camellia_set_key_skcipher(struct crypto_skcipher *tfm,
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const u8 *in_key, unsigned int key_len)
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{
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return camellia_set_key(crypto_skcipher_tfm(tfm), in_key, key_len);
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}
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extern void camellia_sparc64_crypt(const u64 *key, const u32 *input,
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u32 *output, unsigned int key_len);
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@ -81,61 +88,46 @@ typedef void ecb_crypt_op(const u64 *input, u64 *output, unsigned int len,
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extern ecb_crypt_op camellia_sparc64_ecb_crypt_3_grand_rounds;
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extern ecb_crypt_op camellia_sparc64_ecb_crypt_4_grand_rounds;
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#define CAMELLIA_BLOCK_MASK (~(CAMELLIA_BLOCK_SIZE - 1))
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static int __ecb_crypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes, bool encrypt)
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static int __ecb_crypt(struct skcipher_request *req, bool encrypt)
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{
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struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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ecb_crypt_op *op;
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const u64 *key;
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unsigned int nbytes;
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int err;
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op = camellia_sparc64_ecb_crypt_3_grand_rounds;
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if (ctx->key_len != 16)
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op = camellia_sparc64_ecb_crypt_4_grand_rounds;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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if (encrypt)
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key = &ctx->encrypt_key[0];
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else
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key = &ctx->decrypt_key[0];
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camellia_sparc64_load_keys(key, ctx->key_len);
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
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if (likely(block_len)) {
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const u64 *src64;
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u64 *dst64;
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src64 = (const u64 *)walk.src.virt.addr;
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dst64 = (u64 *) walk.dst.virt.addr;
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op(src64, dst64, block_len, key);
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}
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nbytes &= CAMELLIA_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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op(walk.src.virt.addr, walk.dst.virt.addr,
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round_down(nbytes, CAMELLIA_BLOCK_SIZE), key);
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err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static int ecb_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int ecb_encrypt(struct skcipher_request *req)
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{
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return __ecb_crypt(desc, dst, src, nbytes, true);
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return __ecb_crypt(req, true);
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}
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static int ecb_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int ecb_decrypt(struct skcipher_request *req)
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{
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return __ecb_crypt(desc, dst, src, nbytes, false);
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return __ecb_crypt(req, false);
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}
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typedef void cbc_crypt_op(const u64 *input, u64 *output, unsigned int len,
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@ -146,85 +138,65 @@ extern cbc_crypt_op camellia_sparc64_cbc_encrypt_4_grand_rounds;
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extern cbc_crypt_op camellia_sparc64_cbc_decrypt_3_grand_rounds;
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extern cbc_crypt_op camellia_sparc64_cbc_decrypt_4_grand_rounds;
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static int cbc_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int cbc_encrypt(struct skcipher_request *req)
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{
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struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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cbc_crypt_op *op;
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const u64 *key;
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unsigned int nbytes;
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int err;
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op = camellia_sparc64_cbc_encrypt_3_grand_rounds;
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if (ctx->key_len != 16)
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op = camellia_sparc64_cbc_encrypt_4_grand_rounds;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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key = &ctx->encrypt_key[0];
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camellia_sparc64_load_keys(key, ctx->key_len);
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
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if (likely(block_len)) {
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const u64 *src64;
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u64 *dst64;
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src64 = (const u64 *)walk.src.virt.addr;
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dst64 = (u64 *) walk.dst.virt.addr;
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op(src64, dst64, block_len, key,
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(u64 *) walk.iv);
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}
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nbytes &= CAMELLIA_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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op(walk.src.virt.addr, walk.dst.virt.addr,
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round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
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err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static int cbc_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int cbc_decrypt(struct skcipher_request *req)
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{
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struct camellia_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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cbc_crypt_op *op;
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const u64 *key;
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unsigned int nbytes;
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int err;
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op = camellia_sparc64_cbc_decrypt_3_grand_rounds;
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if (ctx->key_len != 16)
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op = camellia_sparc64_cbc_decrypt_4_grand_rounds;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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key = &ctx->decrypt_key[0];
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camellia_sparc64_load_keys(key, ctx->key_len);
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & CAMELLIA_BLOCK_MASK;
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if (likely(block_len)) {
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const u64 *src64;
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u64 *dst64;
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src64 = (const u64 *)walk.src.virt.addr;
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dst64 = (u64 *) walk.dst.virt.addr;
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op(src64, dst64, block_len, key,
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(u64 *) walk.iv);
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}
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nbytes &= CAMELLIA_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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op(walk.src.virt.addr, walk.dst.virt.addr,
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round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
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err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static struct crypto_alg algs[] = { {
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static struct crypto_alg cipher_alg = {
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.cra_name = "camellia",
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.cra_driver_name = "camellia-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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@ -242,46 +214,37 @@ static struct crypto_alg algs[] = { {
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.cia_decrypt = camellia_decrypt
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}
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}
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}, {
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.cra_name = "ecb(camellia)",
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.cra_driver_name = "ecb-camellia-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = CAMELLIA_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct camellia_sparc64_ctx),
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.cra_alignmask = 7,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_u = {
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.blkcipher = {
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.min_keysize = CAMELLIA_MIN_KEY_SIZE,
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.max_keysize = CAMELLIA_MAX_KEY_SIZE,
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.setkey = camellia_set_key,
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.encrypt = ecb_encrypt,
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.decrypt = ecb_decrypt,
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},
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},
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}, {
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.cra_name = "cbc(camellia)",
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.cra_driver_name = "cbc-camellia-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = CAMELLIA_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct camellia_sparc64_ctx),
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.cra_alignmask = 7,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_u = {
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.blkcipher = {
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.min_keysize = CAMELLIA_MIN_KEY_SIZE,
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.max_keysize = CAMELLIA_MAX_KEY_SIZE,
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.ivsize = CAMELLIA_BLOCK_SIZE,
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.setkey = camellia_set_key,
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.encrypt = cbc_encrypt,
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.decrypt = cbc_decrypt,
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},
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},
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}
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};
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static struct skcipher_alg skcipher_algs[] = {
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{
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.base.cra_name = "ecb(camellia)",
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.base.cra_driver_name = "ecb-camellia-sparc64",
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.base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
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.base.cra_ctxsize = sizeof(struct camellia_sparc64_ctx),
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.base.cra_alignmask = 7,
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.base.cra_module = THIS_MODULE,
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.min_keysize = CAMELLIA_MIN_KEY_SIZE,
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.max_keysize = CAMELLIA_MAX_KEY_SIZE,
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.setkey = camellia_set_key_skcipher,
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.encrypt = ecb_encrypt,
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.decrypt = ecb_decrypt,
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}, {
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.base.cra_name = "cbc(camellia)",
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.base.cra_driver_name = "cbc-camellia-sparc64",
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.base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
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.base.cra_ctxsize = sizeof(struct camellia_sparc64_ctx),
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.base.cra_alignmask = 7,
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.base.cra_module = THIS_MODULE,
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.min_keysize = CAMELLIA_MIN_KEY_SIZE,
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.max_keysize = CAMELLIA_MAX_KEY_SIZE,
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.ivsize = CAMELLIA_BLOCK_SIZE,
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.setkey = camellia_set_key_skcipher,
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.encrypt = cbc_encrypt,
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.decrypt = cbc_decrypt,
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}
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};
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static bool __init sparc64_has_camellia_opcode(void)
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@ -300,17 +263,27 @@ static bool __init sparc64_has_camellia_opcode(void)
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static int __init camellia_sparc64_mod_init(void)
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{
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if (sparc64_has_camellia_opcode()) {
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pr_info("Using sparc64 camellia opcodes optimized CAMELLIA implementation\n");
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return crypto_register_algs(algs, ARRAY_SIZE(algs));
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int err;
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if (!sparc64_has_camellia_opcode()) {
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pr_info("sparc64 camellia opcodes not available.\n");
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return -ENODEV;
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}
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pr_info("sparc64 camellia opcodes not available.\n");
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return -ENODEV;
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pr_info("Using sparc64 camellia opcodes optimized CAMELLIA implementation\n");
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err = crypto_register_alg(&cipher_alg);
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if (err)
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return err;
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err = crypto_register_skciphers(skcipher_algs,
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ARRAY_SIZE(skcipher_algs));
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if (err)
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crypto_unregister_alg(&cipher_alg);
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return err;
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}
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static void __exit camellia_sparc64_mod_fini(void)
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{
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crypto_unregister_algs(algs, ARRAY_SIZE(algs));
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crypto_unregister_alg(&cipher_alg);
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crypto_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
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}
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module_init(camellia_sparc64_mod_init);
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@ -1275,6 +1275,7 @@ config CRYPTO_CAMELLIA_SPARC64
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depends on SPARC64
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depends on CRYPTO
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select CRYPTO_ALGAPI
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select CRYPTO_BLKCIPHER
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help
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Camellia cipher algorithm module (SPARC64).
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