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crypto: Validate AES-GCM IV length in check_csp().

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This centralizes the check for valid nonce lengths for AES-GCM.

While here, remove some duplicate checks for valid AES-GCM tag lengths
from ccp(4) and ccr(4).

Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D33194
This commit is contained in:
John Baldwin 2021-12-09 11:52:41 -08:00
parent ec498562b7
commit 6e17a2e00d
8 changed files with 5 additions and 24 deletions
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3
sys/crypto/aesni/aesni.c
View file

@ -305,8 +305,7 @@ aesni_probesession(device_t dev, const struct crypto_session_params *csp)
if (csp->csp_auth_mlen != 0 &&
csp->csp_auth_mlen != GMAC_DIGEST_LEN)
return (EINVAL);
if (csp->csp_ivlen != AES_GCM_IV_LEN ||
!sc->has_aes)
if (!sc->has_aes)
return (EINVAL);
break;
case CRYPTO_AES_CCM_16:

2
sys/crypto/armv8/armv8_crypto.c
View file

@ -217,8 +217,6 @@ armv8_crypto_probesession(device_t dev,
case CRYPTO_AES_NIST_GCM_16:
if (!sc->has_pmul)
return (EINVAL);
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (EINVAL);
if (csp->csp_auth_mlen != 0 &&
csp->csp_auth_mlen != GMAC_DIGEST_LEN)
return (EINVAL);

5
sys/crypto/ccp/ccp.c
View file

@ -378,11 +378,6 @@ ccp_probesession(device_t dev, const struct crypto_session_params *csp)
case CSP_MODE_AEAD:
switch (csp->csp_cipher_alg) {
case CRYPTO_AES_NIST_GCM_16:
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (EINVAL);
if (csp->csp_auth_mlen < 0 ||
csp->csp_auth_mlen > AES_GMAC_HASH_LEN)
return (EINVAL);
if ((sc->hw_features & VERSION_CAP_AES) == 0)
return (EINVAL);
break;

6
sys/dev/cxgbe/crypto/t4_crypto.c
View file

@ -2540,12 +2540,6 @@ ccr_probesession(device_t dev, const struct crypto_session_params *csp)
case CSP_MODE_AEAD:
switch (csp->csp_cipher_alg) {
case CRYPTO_AES_NIST_GCM_16:
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (EINVAL);
if (csp->csp_auth_mlen < 0 ||
csp->csp_auth_mlen > AES_GMAC_HASH_LEN)
return (EINVAL);
break;
case CRYPTO_AES_CCM_16:
break;
default:

2
sys/dev/qat/qat.c
View file

@ -1911,8 +1911,6 @@ qat_probesession(device_t dev, const struct crypto_session_params *csp)
case CSP_MODE_AEAD:
switch (csp->csp_cipher_alg) {
case CRYPTO_AES_NIST_GCM_16:
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return EINVAL;
break;
default:
return EINVAL;

3
sys/dev/safexcel/safexcel.c
View file

@ -2304,9 +2304,6 @@ safexcel_probesession(device_t dev, const struct crypto_session_params *csp)
case CSP_MODE_AEAD:
switch (csp->csp_cipher_alg) {
case CRYPTO_AES_NIST_GCM_16:
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (EINVAL);
break;
case CRYPTO_AES_CCM_16:
break;
default:

5
sys/opencrypto/crypto.c
View file

@ -851,7 +851,10 @@ check_csp(const struct crypto_session_params *csp)
return (false);
break;
case CRYPTO_AES_NIST_GCM_16:
if (csp->csp_auth_mlen > 16)
if (csp->csp_auth_mlen > AES_GMAC_HASH_LEN)
return (false);
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (false);
break;
case CRYPTO_CHACHA20_POLY1305:

3
sys/opencrypto/cryptosoft.c
View file

@ -1308,9 +1308,6 @@ swcr_setup_gcm(struct swcr_session *ses,
struct swcr_auth *swa;
const struct auth_hash *axf;
if (csp->csp_ivlen != AES_GCM_IV_LEN)
return (EINVAL);
/* First, setup the auth side. */
swa = &ses->swcr_auth;
switch (csp->csp_cipher_klen * 8) {