1PKCS5_PBE_KEYIVGEN(3ossl) OpenSSL PKCS5_PBE_KEYIVGEN(3ossl)
2
6 PKCS5_PBE_keyivgen, PKCS5_PBE_keyivgen_ex, PKCS5_pbe2_set,
7 PKCS5_pbe2_set_iv, PKCS5_pbe2_set_iv_ex, PKCS5_pbe_set,
8 PKCS5_pbe_set_ex, PKCS5_pbe2_set_scrypt, PKCS5_pbe_set0_algor,
9 PKCS5_pbe_set0_algor_ex, PKCS5_v2_PBE_keyivgen,
10 PKCS5_v2_PBE_keyivgen_ex, PKCS5_v2_scrypt_keyivgen,
11 PKCS5_v2_scrypt_keyivgen_ex, PKCS5_pbkdf2_set, PKCS5_pbkdf2_set_ex,
12 EVP_PBE_scrypt, EVP_PBE_scrypt_ex - PKCS#5 Password based encryption
13 routines
14
16 #include <openssl/evp.h>
17 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
19 ASN1_TYPE *param, const EVP_CIPHER *cipher,
20 const EVP_MD *md, int en_de);
21 int PKCS5_PBE_keyivgen_ex(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
22 ASN1_TYPE *param, const EVP_CIPHER *cipher,
23 const EVP_MD *md, int en_de, OSSL_LIB_CTX *libctx,
24 const char *propq);
25 int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
26 ASN1_TYPE *param, const EVP_CIPHER *cipher,
27 const EVP_MD *md, int en_de);
28 int PKCS5_v2_PBE_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
29 ASN1_TYPE *param, const EVP_CIPHER *cipher,
30 const EVP_MD *md, int en_de,
31 OSSL_LIB_CTX *libctx, const char *propq);
32 int EVP_PBE_scrypt(const char *pass, size_t passlen,
33 const unsigned char *salt, size_t saltlen,
34 uint64_t N, uint64_t r, uint64_t p, uint64_t maxmem,
35 unsigned char *key, size_t keylen);
36 int EVP_PBE_scrypt_ex(const char *pass, size_t passlen,
37 const unsigned char *salt, size_t saltlen,
38 uint64_t N, uint64_t r, uint64_t p, uint64_t maxmem,
39 unsigned char *key, size_t keylen,
40 OSSL_LIB_CTX *ctx, const char *propq);
41 int PKCS5_v2_scrypt_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
42 int passlen, ASN1_TYPE *param,
43 const EVP_CIPHER *c, const EVP_MD *md, int en_de);
44 int PKCS5_v2_scrypt_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass,
45 int passlen, ASN1_TYPE *param,
46 const EVP_CIPHER *c, const EVP_MD *md, int en_de,
47 OSSL_LIB_CTX *libctx, const char *propq);
48 #include <openssl/x509.h>
50 int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
52 const unsigned char *salt, int saltlen);
53 int PKCS5_pbe_set0_algor_ex(X509_ALGOR *algor, int alg, int iter,
54 const unsigned char *salt, int saltlen,
55 OSSL_LIB_CTX *libctx);
56 X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
58 const unsigned char *salt, int saltlen);
59 X509_ALGOR *PKCS5_pbe_set_ex(int alg, int iter,
60 const unsigned char *salt, int saltlen,
61 OSSL_LIB_CTX *libctx);
62 X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,
64 unsigned char *salt, int saltlen);
65 X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter,
66 unsigned char *salt, int saltlen,
67 unsigned char *aiv, int prf_nid);
68 X509_ALGOR *PKCS5_pbe2_set_iv_ex(const EVP_CIPHER *cipher, int iter,
69 unsigned char *salt, int saltlen,
70 unsigned char *aiv, int prf_nid,
71 OSSL_LIB_CTX *libctx);
72 X509_ALGOR *PKCS5_pbe2_set_scrypt(const EVP_CIPHER *cipher,
73 const unsigned char *salt, int saltlen,
74 unsigned char *aiv, uint64_t N, uint64_t r,
75 uint64_t p);
76 X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen,
78 int prf_nid, int keylen);
79 X509_ALGOR *PKCS5_pbkdf2_set_ex(int iter, unsigned char *salt, int saltlen,
80 int prf_nid, int keylen,
81 OSSL_LIB_CTX *libctx);
82
84 Key Derivation
85 PKCS5_PBE_keyivgen() and PKCS5_PBE_keyivgen_ex() take a password pass
86 of length passlen, parameters param and a message digest function
87 md_type and performs a key derivation according to PKCS#5 PBES1. The
88 resulting key is then used to initialise the cipher context ctx with a
89 cipher cipher for encryption (en_de=1) or decryption (en_de=0).
90 pass is an optional parameter and can be NULL. If passlen is -1, then
92 the function will calculate the length of pass using strlen().
93 PKCS5_v2_PBE_keyivgen() and PKCS5_v2_PBE_keyivgen_ex() are similar to
95 the above but instead use PKCS#5 PBES2 as the encryption algorithm
96 using the supplied parameters.
97 PKCS5_v2_scrypt_keyivgen() and PKCS5_v2_scrypt_keyivgen_ex() use SCRYPT
99 as the key derivation part of the encryption algorithm.
100 salt is the salt used in the derivation of length saltlen. If the salt
102 is NULL, then saltlen must be 0. The function will not attempt to
103 calculate the length of the salt because it is not assumed to be NULL
104 terminated.
105 iter is the iteration count and its value should be greater than or
107 equal to 1. RFC 2898 suggests an iteration count of at least 1000. Any
108 iter less than 1 is treated as a single iteration.
109 digest is the message digest function used in the derivation.
111 Functions ending in _ex() take optional parameters libctx and propq
113 which are used to select appropriate algorithm implementations.
114 Algorithm Identifier Creation
116 PKCS5_pbe_set(), PKCS5_pbe_set_ex(), PKCS5_pbe2_set(),
117 PKCS5_pbe2_set_iv(), PKCS5_pbe2_set_iv_ex() and PKCS5_pbe2_set_scrypt()
118 generate an X509_ALGOR object which represents an AlgorithmIdentifier
119 containing the algorithm OID and associated parameters for the PBE
120 algorithm.
121 PKCS5_pbkdf2_set() and PKCS5_pbkdf2_set_ex() generate an X509_ALGOR
123 object which represents an AlgorithmIdentifier containing the algorithm
124 OID and associated parameters for the PBKDF2 algorithm.
125 PKCS5_pbe_set0_algor() and PKCS5_pbe_set0_algor_ex() set the PBE
127 algorithm OID and parameters into the supplied X509_ALGOR.
128
130 The *_keyivgen() functions are typically used in PKCS#12 to encrypt
131 objects.
132 These functions make no assumption regarding the given password. It
134 will simply be treated as a byte sequence.
135
137 PKCS5_PBE_keyivgen(), PKCS5_v2_PBE_keyivgen(),
138 PKCS5_v2_PBE_keyivgen_ex(), PKCS5_v2_scrypt_keyivgen(),
139 PKCS5_v2_scrypt_keyivgen_ex(), PKCS5_pbe_set0_algor() and
140 PKCS5_pbe_set0_algor_ex() return 1 for success and 0 if an error
141 occurs.
142 PKCS5_pbe_set(), PKCS5_pbe_set_ex(), PKCS5_pbe2_set(),
144 PKCS5_pbe2_set_iv(), PKCS5_pbe2_set_iv_ex(), PKCS5_pbe2_set_scrypt(),
145 PKCS5_pbkdf2_set() and PKCS5_pbkdf2_set_ex() return an X509_ALGOR
146 object or NULL if an error occurs.
147
149 IETF RFC 8018 (<https://tools.ietf.org/html/rfc8018>)
150
152 EVP_PBE_CipherInit_ex(3), PKCS12_pbe_crypt_ex(3),
153 passphrase-encoding(7)
154
156 PKCS5_v2_PBE_keyivgen_ex(), EVP_PBE_scrypt_ex(),
157 PKCS5_v2_scrypt_keyivgen_ex(), PKCS5_pbe_set0_algor_ex(),
158 PKCS5_pbe_set_ex(), PKCS5_pbe2_set_iv_ex() and PKCS5_pbkdf2_set_ex()
159 were added in OpenSSL 3.0.
160 From OpenSSL 3.0 the PBKDF1 algorithm used in PKCS5_PBE_keyivgen() and
162 PKCS5_PBE_keyivgen_ex() has been moved to the legacy provider as an
163 EVP_KDF.
164
166 Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
167 Licensed under the Apache License 2.0 (the "License"). You may not use
169 this file except in compliance with the License. You can obtain a copy
170 in the file LICENSE in the source distribution or at
171 <https://www.openssl.org/source/license.html>.
1723.0.5 2022-07-05 PKCS5_PBE_KEYIVGEN(3ossl)