diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel_cipher.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index 477e0ec35f45..718d64f6e3ee 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -12,6 +12,7 @@ #include <crypto/aead.h> #include <crypto/aes.h> #include <crypto/authenc.h> +#include <crypto/ctr.h> #include <crypto/des.h> #include <crypto/sha.h> #include <crypto/skcipher.h> @@ -226,19 +227,21 @@ static int safexcel_aead_setkey(struct crypto_aead *ctfm, const u8 *key, goto badkey; if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CTR_LOAD) { - /* 20 is minimum AES key: 16 bytes + 4 bytes nonce */ - if (keys.enckeylen < 20) + /* Minimum keysize is minimum AES key size + nonce size */ + if (keys.enckeylen < (AES_MIN_KEY_SIZE + + CTR_RFC3686_NONCE_SIZE)) goto badkey; /* last 4 bytes of key are the nonce! */ - ctx->nonce = *(u32 *)(keys.enckey + keys.enckeylen - 4); + ctx->nonce = *(u32 *)(keys.enckey + keys.enckeylen - + CTR_RFC3686_NONCE_SIZE); /* exclude the nonce here */ - keys.enckeylen -= 4; + keys.enckeylen -= CONTEXT_CONTROL_CRYPTO_MODE_CTR_LOAD; } /* Encryption key */ switch (ctx->alg) { case SAFEXCEL_3DES: - if (keys.enckeylen != 24) + if (keys.enckeylen != DES3_EDE_KEY_SIZE) goto badkey; flags = crypto_aead_get_flags(ctfm); err = __des3_verify_key(&flags, keys.enckey); @@ -1119,9 +1122,9 @@ static int safexcel_skcipher_aesctr_setkey(struct crypto_skcipher *ctfm, unsigned int keylen; /* last 4 bytes of key are the nonce! */ - ctx->nonce = *(u32 *)(key + len - 4); + ctx->nonce = *(u32 *)(key + len - CTR_RFC3686_NONCE_SIZE); /* exclude the nonce here */ - keylen = len - 4; + keylen = len - CTR_RFC3686_NONCE_SIZE; ret = aes_expandkey(&aes, key, keylen); if (ret) { crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN); @@ -1152,10 +1155,10 @@ struct safexcel_alg_template safexcel_alg_ctr_aes = { .setkey = safexcel_skcipher_aesctr_setkey, .encrypt = safexcel_ctr_aes_encrypt, .decrypt = safexcel_ctr_aes_decrypt, - /* Add 4 to include the 4 byte nonce! */ - .min_keysize = AES_MIN_KEY_SIZE + 4, - .max_keysize = AES_MAX_KEY_SIZE + 4, - .ivsize = 8, + /* Add nonce size */ + .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .ivsize = CTR_RFC3686_IV_SIZE, .base = { .cra_name = "rfc3686(ctr(aes))", .cra_driver_name = "safexcel-ctr-aes", @@ -1657,7 +1660,7 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_ctr_aes = { .setkey = safexcel_aead_setkey, .encrypt = safexcel_aead_encrypt_aes, .decrypt = safexcel_aead_decrypt_aes, - .ivsize = 8, + .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))", @@ -1690,7 +1693,7 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_ctr_aes = { .setkey = safexcel_aead_setkey, .encrypt = safexcel_aead_encrypt_aes, .decrypt = safexcel_aead_decrypt_aes, - .ivsize = 8, + .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))", @@ -1723,7 +1726,7 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_ctr_aes = { .setkey = safexcel_aead_setkey, .encrypt = safexcel_aead_encrypt_aes, .decrypt = safexcel_aead_decrypt_aes, - .ivsize = 8, + .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))", @@ -1756,7 +1759,7 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_ctr_aes = { .setkey = safexcel_aead_setkey, .encrypt = safexcel_aead_encrypt_aes, .decrypt = safexcel_aead_decrypt_aes, - .ivsize = 8, + .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))", @@ -1789,7 +1792,7 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_ctr_aes = { .setkey = safexcel_aead_setkey, .encrypt = safexcel_aead_encrypt_aes, .decrypt = safexcel_aead_decrypt_aes, - .ivsize = 8, + .ivsize = CTR_RFC3686_IV_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))", |