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Add support for 3DES ECB.

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At least the linker can discard this function in the cases where nobody
is calling it.

Change-Id: I30050e918e6bc1dd9c97cc70f3a56408701abebc
Reviewed-on: https://boringssl-review.googlesource.com/3724
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
Adam Langley 2015-02-26 16:59:03 -08:00
parent 7282738bad
commit ca8feeb301
2 changed files with 32 additions and 0 deletions
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23
crypto/des/des.c
View File

@ -638,6 +638,29 @@ void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
tin[0] = tin[1] = 0;
}
void DES_ecb3_encrypt(const DES_cblock *input, DES_cblock *output,
const DES_key_schedule *ks1, const DES_key_schedule *ks2,
const DES_key_schedule *ks3, int enc) {
uint32_t l0, l1;
uint32_t ll[2];
const uint8_t *in = input->bytes;
uint8_t *out = output->bytes;
c2l(in, l0);
c2l(in, l1);
ll[0] = l0;
ll[1] = l1;
if (enc) {
DES_encrypt3(ll, ks1, ks2, ks3);
} else {
DES_decrypt3(ll, ks1, ks2, ks3);
}
l0 = ll[0];
l1 = ll[1];
l2c(l0, out);
l2c(l1, out);
}
void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,

9
include/openssl/des.h
View File

@ -112,6 +112,15 @@ OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
const DES_key_schedule *schedule,
DES_cblock *ivec, int enc);
/* DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
* block (8 bytes) of data from |input| to |output| using 3DES. */
OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
DES_cblock *output,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3,
int enc);
/* DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
* bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
* the function takes three different |DES_key_schedule|s. */