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Move checksum functions here. Add krb5_cksumsize function.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2071 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1997-07-09 00:29:04 +00:00
parent d9f3b3ae0d
commit 0a52d57985
1 changed files with 62 additions and 4 deletions
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66
lib/krb5/checksum.c
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@@ -8,11 +8,56 @@ struct checksum_type {
void (*checksum)(void *, size_t, void *);
};
static void
NULL_checksum(void *p, size_t len, void *result)
{
}
static void
MD4_checksum(void *p, size_t len, void *result)
{
struct md4 m;
md4_init(&m);
md4_update(&m, p, len);
md4_finito(&m, result);
}
static void
MD5_checksum(void *p, size_t len, void *result)
{
struct md5 m;
md5_init(&m);
md5_update(&m, p, len);
md5_finito(&m, result);
}
static void
SHA1_checksum(void *p, size_t len, void *result)
{
struct sha m;
sha_init(&m);
sha_update(&m, p, len);
sha_finito(&m, result);
}
static void
CRC_checksum(void *p, size_t len, void *result)
{
u_int32_t crc;
unsigned char *r = result;
crc_init_table ();
crc = crc_update (p, len, 0);
r[0] = crc & 0xff;
r[1] = (crc >> 8) & 0xff;
r[2] = (crc >> 16) & 0xff;
r[3] = (crc >> 24) & 0xff;
}
static struct checksum_type cm[] = {
{ CKSUMTYPE_NONE, 0, krb5_NULL_checksum},
{ CKSUMTYPE_CRC32, 4, krb5_CRC_checksum},
{ CKSUMTYPE_RSA_MD4, 16, krb5_MD4_checksum},
{ CKSUMTYPE_RSA_MD5, 16, krb5_MD5_checksum}
{ CKSUMTYPE_NONE, 0, NULL_checksum},
{ CKSUMTYPE_CRC32, 4, CRC_checksum},
{ CKSUMTYPE_RSA_MD4, 16, MD4_checksum},
{ CKSUMTYPE_RSA_MD5, 16, MD5_checksum}
};
static int num_ctypes = sizeof(cm) / sizeof(cm[0]);
@@ -27,6 +72,19 @@ find_checksum_type(int ctype)
return NULL;
}
krb5_error_code
krb5_cksumsize(krb5_context context,
krb5_cksumtype type,
size_t *size)
{
struct checksum_type *c = find_checksum_type(type);
if(c == NULL)
return KRB5_PROG_SUMTYPE_NOSUPP;
*size = c->checksumsize;
return 0;
}
krb5_error_code
krb5_create_checksum (krb5_context context,
krb5_cksumtype type,