This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode. Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> --- drivers/crypto/cavium/cpt/cptvf_algs.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/crypto/cavium/cpt/cptvf_algs.c b/drivers/crypto/cavium/cpt/cptvf_algs.c index 600336d169a9..8cffe6094270 100644 --- a/drivers/crypto/cavium/cpt/cptvf_algs.c +++ b/drivers/crypto/cavium/cpt/cptvf_algs.c @@ -327,12 +327,30 @@ static int cvm_cfb_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, static int cvm_cbc_des3_setkey(struct crypto_ablkcipher *cipher, const u8 *key, u32 keylen) { + u32 flags = crypto_ablkcipher_get_flags(cipher); + int err; + + err = __des3_verify_key(&flags, key); + if (unlikely(err)) { + crypto_ablkcipher_set_flags(cipher, flags); + return err; + } + return cvm_setkey(cipher, key, keylen, DES3_CBC); } static int cvm_ecb_des3_setkey(struct crypto_ablkcipher *cipher, const u8 *key, u32 keylen) { + u32 flags = crypto_ablkcipher_get_flags(cipher); + int err; + + err = __des3_verify_key(&flags, key); + if (unlikely(err)) { + crypto_ablkcipher_set_flags(cipher, flags); + return err; + } + return cvm_setkey(cipher, key, keylen, DES3_ECB); }