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Improved error handling

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-11-13 00:27:04 +01:00
parent d944246c6a
commit fbf62978dc
2 changed files with 42 additions and 28 deletions
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44
lib/crypto.c
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@ -149,46 +149,49 @@ grub_crypto_xor (void *out, const void *in1, const void *in2, grub_size_t size)
}
}
grub_err_t
gcry_err_code_t
grub_crypto_ecb_decrypt (grub_crypto_cipher_handle_t cipher,
void *out, void *in, grub_size_t size)
{
grub_uint8_t *inptr, *outptr, *end;
if (!cipher->cipher->decrypt)
return GPG_ERR_NOT_SUPPORTED;
if (size % cipher->cipher->blocksize != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"This encryption can't decrypt partial blocks");
return GPG_ERR_INV_ARG;
end = (grub_uint8_t *) in + size;
for (inptr = in, outptr = out; inptr < end;
inptr += cipher->cipher->blocksize, outptr += cipher->cipher->blocksize)
cipher->cipher->decrypt (cipher->ctx, outptr, inptr);
return GRUB_ERR_NONE;
return GPG_ERR_NO_ERROR;
}
grub_err_t
gcry_err_code_t
grub_crypto_ecb_encrypt (grub_crypto_cipher_handle_t cipher,
void *out, void *in, grub_size_t size)
{
grub_uint8_t *inptr, *outptr, *end;
if (!cipher->cipher->encrypt)
return GPG_ERR_NOT_SUPPORTED;
if (size % cipher->cipher->blocksize != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"This encryption can't decrypt partial blocks");
return GPG_ERR_INV_ARG;
end = (grub_uint8_t *) in + size;
for (inptr = in, outptr = out; inptr < end;
inptr += cipher->cipher->blocksize, outptr += cipher->cipher->blocksize)
cipher->cipher->encrypt (cipher->ctx, outptr, inptr);
return GRUB_ERR_NONE;
return GPG_ERR_NO_ERROR;
}
grub_err_t
gcry_err_code_t
grub_crypto_cbc_encrypt (grub_crypto_cipher_handle_t cipher,
void *out, void *in, grub_size_t size,
void *iv_in)
{
grub_uint8_t *inptr, *outptr, *end;
void *iv;
if (!cipher->cipher->decrypt)
return GPG_ERR_NOT_SUPPORTED;
if (size % cipher->cipher->blocksize != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"This encryption can't decrypt partial blocks");
return GPG_ERR_INV_ARG;
end = (grub_uint8_t *) in + size;
iv = iv_in;
for (inptr = in, outptr = out; inptr < end;
@ -199,19 +202,20 @@ grub_crypto_cbc_encrypt (grub_crypto_cipher_handle_t cipher,
iv = outptr;
}
grub_memcpy (iv_in, iv, cipher->cipher->blocksize);
return GRUB_ERR_NONE;
return GPG_ERR_NO_ERROR;
}
grub_err_t
gcry_err_code_t
grub_crypto_cbc_decrypt (grub_crypto_cipher_handle_t cipher,
void *out, void *in, grub_size_t size,
void *iv)
{
grub_uint8_t *inptr, *outptr, *end;
grub_uint8_t ivt[cipher->cipher->blocksize];
if (!cipher->cipher->decrypt)
return GPG_ERR_NOT_SUPPORTED;
if (size % cipher->cipher->blocksize != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"This encryption can't decrypt partial blocks");
return GPG_ERR_INV_ARG;
end = (grub_uint8_t *) in + size;
for (inptr = in, outptr = out; inptr < end;
inptr += cipher->cipher->blocksize, outptr += cipher->cipher->blocksize)
@ -221,5 +225,13 @@ grub_crypto_cbc_decrypt (grub_crypto_cipher_handle_t cipher,
grub_crypto_xor (outptr, outptr, iv, cipher->cipher->blocksize);
grub_memcpy (iv, ivt, cipher->cipher->blocksize);
}
return GRUB_ERR_NONE;
return GPG_ERR_NO_ERROR;
}
grub_err_t
grub_crypto_gcry_error (gcry_err_code_t in)
{
if (in == GPG_ERR_NO_ERROR)
return GRUB_ERR_NONE;
return GRUB_ACCESS_DENIED;
}