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34 #include "krb5_locl.h"
36 int _krb5_AES_SHA2_string_to_default_iterator = 32768;
38 static krb5_error_code
39 AES_SHA2_string_to_key(krb5_context context,
48 struct _krb5_encryption_type *et = NULL;
49 struct _krb5_key_data kd;
52 const EVP_MD *md = NULL;
54 krb5_data_zero(&saltp);
58 if (opaque.length == 0) {
59 iter = _krb5_AES_SHA2_string_to_default_iterator;
60 } else if (opaque.length == 4) {
62 _krb5_get_int(opaque.data, &v, 4);
65 ret = KRB5_PROG_KEYTYPE_NOSUPP; /* XXX */
69 et = _krb5_find_enctype(enctype);
71 ret = KRB5_PROG_KEYTYPE_NOSUPP;
78 ret = krb5_enomem(context);
81 kd.key->keytype = enctype;
82 ret = krb5_data_alloc(&kd.key->keyvalue, et->keytype->size);
84 ret = krb5_enomem(context);
88 enctypesz = strlen(et->name) + 1;
89 ret = krb5_data_alloc(&saltp, enctypesz + salt.saltvalue.length);
91 ret = krb5_enomem(context);
94 memcpy(saltp.data, et->name, enctypesz);
95 memcpy((unsigned char *)saltp.data + enctypesz,
96 salt.saltvalue.data, salt.saltvalue.length);
98 ret = _krb5_aes_sha2_md_for_enctype(context, enctype, &md);
102 ret = PKCS5_PBKDF2_HMAC(password.data, password.length,
103 saltp.data, saltp.length,
105 et->keytype->size, kd.key->keyvalue.data);
107 krb5_set_error_message(context, KRB5_PROG_KEYTYPE_NOSUPP,
108 "Error calculating s2k");
109 ret = KRB5_PROG_KEYTYPE_NOSUPP;
113 ret = _krb5_derive_key(context, et, &kd, "kerberos", strlen("kerberos"));
117 ret = krb5_copy_keyblock_contents(context, kd.key, key);
122 krb5_data_free(&saltp);
123 _krb5_free_key_data(context, &kd, et);
128 struct salt_type _krb5_AES_SHA2_salt[] = {
132 AES_SHA2_string_to_key