diff options
Diffstat (limited to 'src/lib/crypto/krb/hash_provider/hash_crc32.c')
-rw-r--r-- | src/lib/crypto/krb/hash_provider/hash_crc32.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/lib/crypto/krb/hash_provider/hash_crc32.c b/src/lib/crypto/krb/hash_provider/hash_crc32.c new file mode 100644 index 0000000..ca26810 --- /dev/null +++ b/src/lib/crypto/krb/hash_provider/hash_crc32.c @@ -0,0 +1,55 @@ +/* + * 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 "crc-32.h" +#include "hash_provider.h" + +static krb5_error_code +k5_crc32_hash(unsigned int icount, const krb5_data *input, + krb5_data *output) +{ + unsigned long c, cn; + unsigned int i; + + if (output->length != CRC32_CKSUM_LENGTH) + return(KRB5_CRYPTO_INTERNAL); + + c = 0; + for (i=0; i<icount; i++) { + mit_crc32(input[i].data, input[i].length, &cn); + c ^= cn; + } + + store_32_le(c, output->data); + return(0); +} + +const struct krb5_hash_provider krb5int_hash_crc32 = { + CRC32_CKSUM_LENGTH, + 1, + k5_crc32_hash +}; |