diff options
Diffstat (limited to 'drivers/crypto/ixp4xx_crypto.c')
| -rw-r--r-- | drivers/crypto/ixp4xx_crypto.c | 64 |
1 files changed, 55 insertions, 9 deletions
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index 5c4659b04d70..9bbde2f26cac 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -758,14 +758,6 @@ static int setup_cipher(struct crypto_tfm *tfm, int encrypt, return -EINVAL; } cipher_cfg |= keylen_cfg; - } else if (cipher_cfg & MOD_3DES) { - const u32 *K = (const u32 *)key; - if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) || - !((K[2] ^ K[4]) | (K[3] ^ K[5])))) - { - *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; - return -EINVAL; - } } else { u32 tmp[DES_EXPKEY_WORDS]; if (des_ekey(tmp, key) == 0) { @@ -859,6 +851,19 @@ out: return ret; } +static int ablk_des3_setkey(struct crypto_ablkcipher *tfm, const u8 *key, + unsigned int key_len) +{ + u32 flags = crypto_ablkcipher_get_flags(tfm); + int err; + + err = __des3_verify_key(&flags, key); + if (unlikely(err)) + crypto_ablkcipher_set_flags(tfm, flags); + + return ablk_setkey(tfm, key, key_len); +} + static int ablk_rfc3686_setkey(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int key_len) { @@ -1175,6 +1180,43 @@ badkey: return -EINVAL; } +static int des3_aead_setkey(struct crypto_aead *tfm, const u8 *key, + unsigned int keylen) +{ + struct ixp_ctx *ctx = crypto_aead_ctx(tfm); + u32 flags = CRYPTO_TFM_RES_BAD_KEY_LEN; + struct crypto_authenc_keys keys; + int err; + + err = crypto_authenc_extractkeys(&keys, key, keylen); + if (unlikely(err)) + goto badkey; + + err = -EINVAL; + if (keys.authkeylen > sizeof(ctx->authkey)) + goto badkey; + + if (keys.enckeylen != DES3_EDE_KEY_SIZE) + goto badkey; + + flags = crypto_aead_get_flags(tfm); + err = __des3_verify_key(&flags, keys.enckey); + if (unlikely(err)) + goto badkey; + + memcpy(ctx->authkey, keys.authkey, keys.authkeylen); + memcpy(ctx->enckey, keys.enckey, keys.enckeylen); + ctx->authkey_len = keys.authkeylen; + ctx->enckey_len = keys.enckeylen; + + memzero_explicit(&keys, sizeof(keys)); + return aead_setup(tfm, crypto_aead_authsize(tfm)); +badkey: + crypto_aead_set_flags(tfm, flags); + memzero_explicit(&keys, sizeof(keys)); + return err; +} + static int aead_encrypt(struct aead_request *req) { return aead_perform(req, 1, req->assoclen, req->cryptlen, req->iv); @@ -1220,6 +1262,7 @@ static struct ixp_alg ixp4xx_algos[] = { .min_keysize = DES3_EDE_KEY_SIZE, .max_keysize = DES3_EDE_KEY_SIZE, .ivsize = DES3_EDE_BLOCK_SIZE, + .setkey = ablk_des3_setkey, } } }, @@ -1232,6 +1275,7 @@ static struct ixp_alg ixp4xx_algos[] = { .cra_u = { .ablkcipher = { .min_keysize = DES3_EDE_KEY_SIZE, .max_keysize = DES3_EDE_KEY_SIZE, + .setkey = ablk_des3_setkey, } } }, @@ -1313,6 +1357,7 @@ static struct ixp_aead_alg ixp4xx_aeads[] = { }, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = MD5_DIGEST_SIZE, + .setkey = des3_aead_setkey, }, .hash = &hash_alg_md5, .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192, @@ -1337,6 +1382,7 @@ static struct ixp_aead_alg ixp4xx_aeads[] = { }, .ivsize = DES3_EDE_BLOCK_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, + .setkey = des3_aead_setkey, }, .hash = &hash_alg_sha1, .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192, @@ -1443,7 +1489,7 @@ static int __init ixp_module_init(void) /* authenc */ cra->base.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC; - cra->setkey = aead_setkey; + cra->setkey = cra->setkey ?: aead_setkey; cra->setauthsize = aead_setauthsize; cra->encrypt = aead_encrypt; cra->decrypt = aead_decrypt; |