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author | Zhanna Tsitkov <tsitkova@mit.edu> | 2009-08-03 14:19:16 +0000 |
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committer | Zhanna Tsitkov <tsitkova@mit.edu> | 2009-08-03 14:19:16 +0000 |
commit | 3c40c7f134b4e87baa43b0cacb435b6f96245e2f (patch) | |
tree | 2b1014db60c1d3941f17a4d00221e07cc5cece62 /src/lib/crypto/krb/string_to_key.c | |
parent | ab7ffb919b4ee5ee5bc07f987d9163202a632e6a (diff) | |
download | krb5-3c40c7f134b4e87baa43b0cacb435b6f96245e2f.zip krb5-3c40c7f134b4e87baa43b0cacb435b6f96245e2f.tar.gz krb5-3c40c7f134b4e87baa43b0cacb435b6f96245e2f.tar.bz2 |
Crypto modularity proj: Separate files under crypto directory based on their functionality. Move Kerberos specific files into krb subdir and MIT specific - into builtin subdir. Place all tests into crypto_tests subfolder.
bigredbutton: whitespace
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@22477 dc483132-0cff-0310-8789-dd5450dbe970
Diffstat (limited to 'src/lib/crypto/krb/string_to_key.c')
-rw-r--r-- | src/lib/crypto/krb/string_to_key.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/lib/crypto/krb/string_to_key.c b/src/lib/crypto/krb/string_to_key.c new file mode 100644 index 0000000..71d9db6 --- /dev/null +++ b/src/lib/crypto/krb/string_to_key.c @@ -0,0 +1,101 @@ +/* + * Copyright (C) 1998 by the FundsXpress, INC. + * + * All rights reserved. + * + * Export of this software from the United States of America may require + * a specific license from the United States Government. It is the + * responsibility of any person or organization contemplating export to + * obtain such a license before exporting. + * + * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and + * distribute this software and its documentation for any purpose and + * without fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright notice and + * this permission notice appear in supporting documentation, and that + * the name of FundsXpress. not be used in advertising or publicity pertaining + * to distribution of the software without specific, written prior + * permission. FundsXpress makes no representations about the suitability of + * this software for any purpose. It is provided "as is" without express + * or implied warranty. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#include "k5-int.h" +#include "etypes.h" + +krb5_error_code KRB5_CALLCONV +krb5_c_string_to_key_with_params(krb5_context context, + krb5_enctype enctype, + const krb5_data *string, + const krb5_data *salt, + const krb5_data *params, + krb5_keyblock *key); + + +krb5_error_code KRB5_CALLCONV +krb5_c_string_to_key(krb5_context context, krb5_enctype enctype, + const krb5_data *string, const krb5_data *salt, + krb5_keyblock *key) +{ + return krb5_c_string_to_key_with_params(context, enctype, string, salt, + NULL, key); +} + +krb5_error_code KRB5_CALLCONV +krb5_c_string_to_key_with_params(krb5_context context, krb5_enctype enctype, + const krb5_data *string, + const krb5_data *salt, + const krb5_data *params, krb5_keyblock *key) +{ + int i; + krb5_error_code ret; + const struct krb5_enc_provider *enc; + size_t keybytes, keylength; + + for (i=0; i<krb5_enctypes_length; i++) { + if (krb5_enctypes_list[i].etype == enctype) + break; + } + + if (i == krb5_enctypes_length) + return(KRB5_BAD_ENCTYPE); + + enc = krb5_enctypes_list[i].enc; +/* xxx AFS string2key function is indicated by a special length in + * the salt in much of the code. However only the DES enctypes can + * deal with this. Using s2kparams would be a much better solution.*/ + if (salt && salt->length == SALT_TYPE_AFS_LENGTH) { + switch (enctype) { + case ENCTYPE_DES_CBC_CRC: + case ENCTYPE_DES_CBC_MD4: + case ENCTYPE_DES_CBC_MD5: + break; + default: + return (KRB5_CRYPTO_INTERNAL); + } + } + + keybytes = enc->keybytes; + keylength = enc->keylength; + + if ((key->contents = (krb5_octet *) malloc(keylength)) == NULL) + return(ENOMEM); + + key->magic = KV5M_KEYBLOCK; + key->enctype = enctype; + key->length = keylength; + + ret = (*krb5_enctypes_list[i].str2key)(enc, string, salt, params, key); + if (ret) { + memset(key->contents, 0, keylength); + free(key->contents); + key->length = 0; + key->contents = NULL; + } + + return(ret); +} |