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Add DES_set_odd_parity.

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Because NTLM authentication is still a thing.

Change-Id: I3308a8431c82f0b614e09ce3e5efac1526881f1e
Reviewed-on: https://boringssl-review.googlesource.com/3723
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
Adam Langley 2015-02-24 16:37:26 -08:00
parent 3f92d21094
commit 7282738bad
2 changed files with 33 additions and 0 deletions
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29
crypto/des/des.c
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@ -349,6 +349,35 @@ void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule) {
} }
} }
static const uint8_t kOddParity[256] = {
1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14,
14, 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28,
31, 31, 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44,
44, 47, 47, 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59,
61, 61, 62, 62, 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74,
74, 76, 76, 79, 79, 81, 81, 82, 82, 84, 84, 87, 87, 88, 88,
91, 91, 93, 93, 94, 94, 97, 97, 98, 98, 100, 100, 103, 103, 104,
104, 107, 107, 109, 109, 110, 110, 112, 112, 115, 115, 117, 117, 118, 118,
121, 121, 122, 122, 124, 124, 127, 127, 128, 128, 131, 131, 133, 133, 134,
134, 137, 137, 138, 138, 140, 140, 143, 143, 145, 145, 146, 146, 148, 148,
151, 151, 152, 152, 155, 155, 157, 157, 158, 158, 161, 161, 162, 162, 164,
164, 167, 167, 168, 168, 171, 171, 173, 173, 174, 174, 176, 176, 179, 179,
181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, 191, 193, 193, 194,
194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, 206, 208, 208,
211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, 223, 224,
224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, 239,
241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254,
254
};
void DES_set_odd_parity(DES_cblock *key) {
unsigned i;
for (i = 0; i < DES_KEY_SZ; i++) {
key->bytes[i] = kOddParity[key->bytes[i]];
}
}
static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) { static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) {
uint32_t l, r, t, u; uint32_t l, r, t, u;
const uint32_t *s; const uint32_t *s;

4
include/openssl/des.h
View File

@ -94,6 +94,10 @@ typedef struct DES_ks {
OPENSSL_EXPORT void DES_set_key(const DES_cblock *key, OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
DES_key_schedule *schedule); DES_key_schedule *schedule);
/* DES_set_odd_parity sets the parity bits (the least-significant bits in each
* byte) of |key| given the other bits in each byte. */
OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
/* DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a /* DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
* single DES block (8 bytes) from in to out, using the key configured in * single DES block (8 bytes) from in to out, using the key configured in
* |schedule|. */ * |schedule|. */