diff options
Diffstat (limited to 'crypto/heimdal/lib/asn1/der_put.c')
| -rw-r--r-- | crypto/heimdal/lib/asn1/der_put.c | 98 |
1 files changed, 88 insertions, 10 deletions
diff --git a/crypto/heimdal/lib/asn1/der_put.c b/crypto/heimdal/lib/asn1/der_put.c index 1eda917..1dfafdc 100644 --- a/crypto/heimdal/lib/asn1/der_put.c +++ b/crypto/heimdal/lib/asn1/der_put.c @@ -33,13 +33,14 @@ #include "der_locl.h" -RCSID("$Id: der_put.c,v 1.24 2001/01/29 08:31:27 assar Exp $"); +RCSID("$Id: der_put.c,v 1.27 2001/09/25 23:37:25 assar Exp $"); /* * All encoding functions take a pointer `p' to first position in * which to write, from the right, `len' which means the maximum - * number of characters we are able to write and return an int - * indicating how many actually got written, or <0 in case of errors. + * number of characters we are able to write. The function returns + * the number of characters written in `size' (if non-NULL). + * The return value is 0 or an error. */ static int @@ -111,14 +112,12 @@ der_put_int (unsigned char *p, size_t len, int val, size_t *size) int der_put_length (unsigned char *p, size_t len, size_t val, size_t *size) { + if (len < 1) + return ASN1_OVERFLOW; if (val < 128) { - if (len < 1) - return ASN1_OVERFLOW; - else { - *p = val; - *size = 1; - return 0; - } + *p = val; + *size = 1; + return 0; } else { size_t l; int e; @@ -162,6 +161,36 @@ der_put_octet_string (unsigned char *p, size_t len, } int +der_put_oid (unsigned char *p, size_t len, + const oid *data, size_t *size) +{ + unsigned char *base = p; + int n; + + for (n = data->length - 1; n >= 2; --n) { + unsigned u = data->components[n]; + + if (len < 1) + return ASN1_OVERFLOW; + *p-- = u % 128; + u /= 128; + --len; + while (u > 0) { + if (len < 1) + return ASN1_OVERFLOW; + *p-- = 128 + u % 128; + u /= 128; + --len; + } + } + if (len < 1) + return ASN1_OVERFLOW; + *p-- = 40 * data->components[0] + data->components[1]; + *size = base - p; + return 0; +} + +int der_put_tag (unsigned char *p, size_t len, Der_class class, Der_type type, int tag, size_t *size) { @@ -246,6 +275,31 @@ encode_unsigned (unsigned char *p, size_t len, const unsigned *data, } int +encode_enumerated (unsigned char *p, size_t len, const unsigned *data, + size_t *size) +{ + unsigned num = *data; + size_t ret = 0; + size_t l; + int e; + + e = der_put_int (p, len, num, &l); + if(e) + return e; + p -= l; + len -= l; + ret += l; + e = der_put_length_and_tag (p, len, l, UNIV, PRIM, UT_Enumerated, &l); + if (e) + return e; + p -= l; + len -= l; + ret += l; + *size = ret; + return 0; +} + +int encode_general_string (unsigned char *p, size_t len, const general_string *data, size_t *size) { @@ -294,6 +348,30 @@ encode_octet_string (unsigned char *p, size_t len, } int +encode_oid(unsigned char *p, size_t len, + const oid *k, size_t *size) +{ + size_t ret = 0; + size_t l; + int e; + + e = der_put_oid (p, len, k, &l); + if (e) + return e; + p -= l; + len -= l; + ret += l; + e = der_put_length_and_tag (p, len, l, UNIV, PRIM, UT_OID, &l); + if (e) + return e; + p -= l; + len -= l; + ret += l; + *size = ret; + return 0; +} + +int time2generalizedtime (time_t t, octet_string *s) { struct tm *tm; |
