diff options
Diffstat (limited to 'arch/x86/crypto/des3_ede_glue.c')
| -rw-r--r-- | arch/x86/crypto/des3_ede_glue.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/arch/x86/crypto/des3_ede_glue.c b/arch/x86/crypto/des3_ede_glue.c index 968386c21ef4..89830e531350 100644 --- a/arch/x86/crypto/des3_ede_glue.c +++ b/arch/x86/crypto/des3_ede_glue.c @@ -19,8 +19,8 @@ #include <linux/types.h> struct des3_ede_x86_ctx { - u32 enc_expkey[DES3_EDE_EXPKEY_WORDS]; - u32 dec_expkey[DES3_EDE_EXPKEY_WORDS]; + struct des3_ede_ctx enc; + struct des3_ede_ctx dec; }; /* regular block cipher functions */ @@ -34,7 +34,7 @@ asmlinkage void des3_ede_x86_64_crypt_blk_3way(const u32 *expkey, u8 *dst, static inline void des3_ede_enc_blk(struct des3_ede_x86_ctx *ctx, u8 *dst, const u8 *src) { - u32 *enc_ctx = ctx->enc_expkey; + u32 *enc_ctx = ctx->enc.expkey; des3_ede_x86_64_crypt_blk(enc_ctx, dst, src); } @@ -42,7 +42,7 @@ static inline void des3_ede_enc_blk(struct des3_ede_x86_ctx *ctx, u8 *dst, static inline void des3_ede_dec_blk(struct des3_ede_x86_ctx *ctx, u8 *dst, const u8 *src) { - u32 *dec_ctx = ctx->dec_expkey; + u32 *dec_ctx = ctx->dec.expkey; des3_ede_x86_64_crypt_blk(dec_ctx, dst, src); } @@ -50,7 +50,7 @@ static inline void des3_ede_dec_blk(struct des3_ede_x86_ctx *ctx, u8 *dst, static inline void des3_ede_enc_blk_3way(struct des3_ede_x86_ctx *ctx, u8 *dst, const u8 *src) { - u32 *enc_ctx = ctx->enc_expkey; + u32 *enc_ctx = ctx->enc.expkey; des3_ede_x86_64_crypt_blk_3way(enc_ctx, dst, src); } @@ -58,7 +58,7 @@ static inline void des3_ede_enc_blk_3way(struct des3_ede_x86_ctx *ctx, u8 *dst, static inline void des3_ede_dec_blk_3way(struct des3_ede_x86_ctx *ctx, u8 *dst, const u8 *src) { - u32 *dec_ctx = ctx->dec_expkey; + u32 *dec_ctx = ctx->dec.expkey; des3_ede_x86_64_crypt_blk_3way(dec_ctx, dst, src); } @@ -122,7 +122,7 @@ static int ecb_encrypt(struct skcipher_request *req) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm); - return ecb_crypt(req, ctx->enc_expkey); + return ecb_crypt(req, ctx->enc.expkey); } static int ecb_decrypt(struct skcipher_request *req) @@ -130,7 +130,7 @@ static int ecb_decrypt(struct skcipher_request *req) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm); - return ecb_crypt(req, ctx->dec_expkey); + return ecb_crypt(req, ctx->dec.expkey); } static unsigned int __cbc_encrypt(struct des3_ede_x86_ctx *ctx, @@ -348,20 +348,28 @@ static int des3_ede_x86_setkey(struct crypto_tfm *tfm, const u8 *key, u32 i, j, tmp; int err; - /* Generate encryption context using generic implementation. */ - err = __des3_ede_setkey(ctx->enc_expkey, &tfm->crt_flags, key, keylen); - if (err < 0) + err = des3_ede_expand_key(&ctx->enc, key, keylen); + if (err == -ENOKEY) { + if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS) + err = -EINVAL; + else + err = 0; + } + + if (err) { + memset(ctx, 0, sizeof(*ctx)); return err; + } /* Fix encryption context for this implementation and form decryption * context. */ j = DES3_EDE_EXPKEY_WORDS - 2; for (i = 0; i < DES3_EDE_EXPKEY_WORDS; i += 2, j -= 2) { - tmp = ror32(ctx->enc_expkey[i + 1], 4); - ctx->enc_expkey[i + 1] = tmp; + tmp = ror32(ctx->enc.expkey[i + 1], 4); + ctx->enc.expkey[i + 1] = tmp; - ctx->dec_expkey[j + 0] = ctx->enc_expkey[i + 0]; - ctx->dec_expkey[j + 1] = tmp; + ctx->dec.expkey[j + 0] = ctx->enc.expkey[i + 0]; + ctx->dec.expkey[j + 1] = tmp; } return 0; |