1 .TH "DES crypto functions" 3 "11 Jan 2012" "Version 1.5.2" "Heimdal crypto library" \" -*- nroff -*-
5 DES crypto functions \-
10 .RI "void \fBDES_set_odd_parity\fP (DES_cblock *key)"
13 .RI "int HC_DEPRECATED \fBDES_check_key_parity\fP (DES_cblock *key)"
16 .RI "int \fBDES_is_weak_key\fP (DES_cblock *key)"
19 .RI "int HC_DEPRECATED \fBDES_set_key\fP (DES_cblock *key, DES_key_schedule *ks)"
22 .RI "int \fBDES_set_key_unchecked\fP (DES_cblock *key, DES_key_schedule *ks)"
25 .RI "int \fBDES_set_key_checked\fP (DES_cblock *key, DES_key_schedule *ks)"
28 .RI "int \fBDES_key_sched\fP (DES_cblock *key, DES_key_schedule *ks)"
31 .RI "void \fBDES_encrypt\fP (uint32_t u[2], DES_key_schedule *ks, int encp)"
34 .RI "void \fBDES_ecb_encrypt\fP (DES_cblock *input, DES_cblock *output, DES_key_schedule *ks, int encp)"
37 .RI "void \fBDES_cbc_encrypt\fP (const void *in, void *out, long length, DES_key_schedule *ks, DES_cblock *iv, int encp)"
40 .RI "void \fBDES_pcbc_encrypt\fP (const void *in, void *out, long length, DES_key_schedule *ks, DES_cblock *iv, int encp)"
43 .RI "void \fBDES_ecb3_encrypt\fP (DES_cblock *input, DES_cblock *output, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3, int encp)"
46 .RI "void \fBDES_ede3_cbc_encrypt\fP (const void *in, void *out, long length, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3, DES_cblock *iv, int encp)"
49 .RI "void \fBDES_cfb64_encrypt\fP (const void *in, void *out, long length, DES_key_schedule *ks, DES_cblock *iv, int *num, int encp)"
52 .RI "uint32_t \fBDES_cbc_cksum\fP (const void *in, DES_cblock *output, long length, DES_key_schedule *ks, DES_cblock *iv)"
55 .RI "void \fBDES_string_to_key\fP (const char *str, DES_cblock *key)"
58 .RI "int HC_DEPRECATED \fBDES_new_random_key\fP (DES_cblock *key)"
61 .RI "void HC_DEPRECATED \fBDES_init_random_number_generator\fP (DES_cblock *seed)"
64 .RI "void HC_DEPRECATED \fBDES_random_key\fP (DES_cblock *key)"
67 .SH "Detailed Description"
69 See the \fBDES - Data Encryption Standard crypto interface\fP for description and examples.
70 .SH "Function Documentation"
72 .SS "uint32_t DES_cbc_cksum (const void * in, DES_cblock * output, long length, DES_key_schedule * ks, DES_cblock * iv)"
74 Crete a checksum using DES in CBC encryption mode. This mode is only used for Kerberos 4, and it should stay that way.
76 The IV must always be diffrent for diffrent input data blocks.
80 \fIin\fP data to checksum
82 \fIoutput\fP the checksum
84 \fIlength\fP length of data
86 \fIks\fP key schedule to use
88 \fIiv\fP initial vector to use
92 .SS "void DES_cbc_encrypt (const void * in, void * out, long length, DES_key_schedule * ks, DES_cblock * iv, int encp)"
94 Encrypt/decrypt a block using DES in Chain Block Cipher mode (cbc).
96 The IV must always be diffrent for diffrent input data blocks.
100 \fIin\fP data to encrypt
102 \fIout\fP data to encrypt
104 \fIlength\fP length of data
106 \fIks\fP key schedule to use
108 \fIiv\fP initial vector to use
110 \fIencp\fP if non zero, encrypt. if zero, decrypt.
114 .SS "void DES_cfb64_encrypt (const void * in, void * out, long length, DES_key_schedule * ks, DES_cblock * iv, int * num, int encp)"
116 Encrypt/decrypt using DES in cipher feedback mode with 64 bit feedback.
118 The IV must always be diffrent for diffrent input data blocks.
122 \fIin\fP data to encrypt
124 \fIout\fP data to encrypt
126 \fIlength\fP length of data
128 \fIks\fP key schedule to use
130 \fIiv\fP initial vector to use
132 \fInum\fP offset into in cipher block encryption/decryption stop last time.
134 \fIencp\fP if non zero, encrypt. if zero, decrypt.
138 .SS "int HC_DEPRECATED DES_check_key_parity (DES_cblock * key)"
140 Check if the key have correct parity.
144 \fIkey\fP key to check the parity.
149 1 on success, 0 on failure.
153 .SS "void DES_ecb3_encrypt (DES_cblock * input, DES_cblock * output, DES_key_schedule * ks1, DES_key_schedule * ks2, DES_key_schedule * ks3, int encp)"
155 Encrypt/decrypt a block using triple DES using EDE mode, encrypt/decrypt/encrypt.
159 \fIinput\fP data to encrypt
161 \fIoutput\fP data to encrypt
163 \fIks1\fP key schedule to use
165 \fIks2\fP key schedule to use
167 \fIks3\fP key schedule to use
169 \fIencp\fP if non zero, encrypt. if zero, decrypt.
173 .SS "void DES_ecb_encrypt (DES_cblock * input, DES_cblock * output, DES_key_schedule * ks, int encp)"
175 Encrypt/decrypt a block using DES.
179 \fIinput\fP data to encrypt
181 \fIoutput\fP data to encrypt
183 \fIks\fP key schedule to use
185 \fIencp\fP if non zero, encrypt. if zero, decrypt.
189 .SS "void DES_ede3_cbc_encrypt (const void * in, void * out, long length, DES_key_schedule * ks1, DES_key_schedule * ks2, DES_key_schedule * ks3, DES_cblock * iv, int encp)"
191 Encrypt/decrypt using Triple DES in Chain Block Cipher mode (cbc).
193 The IV must always be diffrent for diffrent input data blocks.
197 \fIin\fP data to encrypt
199 \fIout\fP data to encrypt
201 \fIlength\fP length of data
203 \fIks1\fP key schedule to use
205 \fIks2\fP key schedule to use
207 \fIks3\fP key schedule to use
209 \fIiv\fP initial vector to use
211 \fIencp\fP if non zero, encrypt. if zero, decrypt.
215 .SS "void DES_encrypt (uint32_t u[2], DES_key_schedule * ks, int encp)"
217 Encrypt/decrypt a block using DES. Also called ECB mode
221 \fIu\fP data to encrypt
223 \fIks\fP key schedule to use
225 \fIencp\fP if non zero, encrypt. if zero, decrypt.
229 .SS "void HC_DEPRECATED DES_init_random_number_generator (DES_cblock * seed)"
231 Seed the random number generator. Deprecated, use \fBRAND - random number\fP
235 \fIseed\fP a seed to seed that random number generate with.
239 .SS "int DES_is_weak_key (DES_cblock * key)"
241 Checks if the key is any of the weaks keys that makes DES attacks trival.
245 \fIkey\fP key to check.
250 1 if the key is weak, 0 otherwise.
254 .SS "int DES_key_sched (DES_cblock * key, DES_key_schedule * ks)"
256 Compatibility function for eay libdes, works just like \fBDES_set_key_checked()\fP.
260 \fIkey\fP a key to initialize the key schedule with.
262 \fIks\fP a key schedule to initialize.
267 0 on success, -1 on invalid parity, -2 on weak key.
271 .SS "int HC_DEPRECATED DES_new_random_key (DES_cblock * key)"
273 Generate a random des key using a random block, fixup parity and skip weak keys.
277 \fIkey\fP is set to a random key.
282 0 on success, non zero on random number generator failure.
286 .SS "void DES_pcbc_encrypt (const void * in, void * out, long length, DES_key_schedule * ks, DES_cblock * iv, int encp)"
288 Encrypt/decrypt a block using DES in Propagating Cipher Block Chaining mode. This mode is only used for Kerberos 4, and it should stay that way.
290 The IV must always be diffrent for diffrent input data blocks.
294 \fIin\fP data to encrypt
296 \fIout\fP data to encrypt
298 \fIlength\fP length of data
300 \fIks\fP key schedule to use
302 \fIiv\fP initial vector to use
304 \fIencp\fP if non zero, encrypt. if zero, decrypt.
308 .SS "void HC_DEPRECATED DES_random_key (DES_cblock * key)"
310 Generate a random key, deprecated since it doesn't return an error code, use \fBDES_new_random_key()\fP.
314 \fIkey\fP is set to a random key.
318 .SS "int HC_DEPRECATED DES_set_key (DES_cblock * key, DES_key_schedule * ks)"
320 Setup a des key schedule from a key. Deprecated function, use \fBDES_set_key_unchecked()\fP or \fBDES_set_key_checked()\fP instead.
324 \fIkey\fP a key to initialize the key schedule with.
326 \fIks\fP a key schedule to initialize.
335 .SS "int DES_set_key_checked (DES_cblock * key, DES_key_schedule * ks)"
337 Just like \fBDES_set_key_unchecked()\fP except checking that the key is not weak for or have correct parity.
341 \fIkey\fP a key to initialize the key schedule with.
343 \fIks\fP a key schedule to initialize.
348 0 on success, -1 on invalid parity, -2 on weak key.
352 .SS "int DES_set_key_unchecked (DES_cblock * key, DES_key_schedule * ks)"
354 Setup a des key schedule from a key. The key is no longer needed after this transaction and can cleared.
356 Does NOT check that the key is weak for or have wrong parity.
360 \fIkey\fP a key to initialize the key schedule with.
362 \fIks\fP a key schedule to initialize.
371 .SS "void DES_set_odd_parity (DES_cblock * key)"
373 Set the parity of the key block, used to generate a des key from a random key. See \fBDES key generation\fP.
377 \fIkey\fP key to fixup the parity for.
381 .SS "void DES_string_to_key (const char * str, DES_cblock * key)"
383 Convert a string to a DES key. Use something like \fBPKCS5_PBKDF2_HMAC_SHA1()\fP to create key from passwords.
387 \fIstr\fP The string to convert to a key
389 \fIkey\fP the resulting key