| KRB5_ENCRYPT(3) | Library Functions Manual | KRB5_ENCRYPT(3) |
krb5_crypto_getblocksize,
krb5_crypto_getconfoundersize
krb5_crypto_getenctype,
krb5_crypto_getpadsize,
krb5_crypto_overhead,
krb5_decrypt,
krb5_decrypt_EncryptedData,
krb5_decrypt_ivec,
krb5_decrypt_ticket,
krb5_encrypt,
krb5_encrypt_EncryptedData,
krb5_encrypt_ivec,
krb5_enctype_disable,
krb5_enctype_keysize,
krb5_enctype_to_string,
krb5_enctype_valid,
krb5_get_wrapped_length,
krb5_string_to_enctype —
encrypt and decrypt data, set and get encryption type
parameters
Kerberos 5 Library (libkrb5, -lkrb5)
#include
<krb5.h>
krb5_error_code
krb5_encrypt(krb5_context
context, krb5_crypto crypto,
unsigned usage, void *data,
size_t len, krb5_data
*result);
krb5_error_code
krb5_encrypt_EncryptedData(krb5_context
context, krb5_crypto crypto,
unsigned usage, void *data,
size_t len, int kvno,
EncryptedData *result);
krb5_error_code
krb5_encrypt_ivec(krb5_context
context, krb5_crypto crypto,
unsigned usage, void *data,
size_t len, krb5_data *result,
void *ivec);
krb5_error_code
krb5_decrypt(krb5_context
context, krb5_crypto crypto,
unsigned usage, void *data,
size_t len, krb5_data
*result);
krb5_error_code
krb5_decrypt_EncryptedData(krb5_context
context, krb5_crypto crypto,
unsigned usage, EncryptedData
*e, krb5_data *result);
krb5_error_code
krb5_decrypt_ivec(krb5_context
context, krb5_crypto crypto,
unsigned usage, void *data,
size_t len, krb5_data *result,
void *ivec);
krb5_error_code
krb5_decrypt_ticket(krb5_context
context, Ticket *ticket,
krb5_keyblock *key, EncTicketPart
*out, krb5_flags flags);
krb5_error_code
krb5_crypto_getblocksize(krb5_context
context, size_t *blocksize);
krb5_error_code
krb5_crypto_getenctype(krb5_context
context, krb5_crypto crypto,
krb5_enctype *enctype);
krb5_error_code
krb5_crypto_getpadsize(krb5_context
context, size_t,
*padsize");
krb5_error_code
krb5_crypto_getconfoundersize(krb5_context
context, krb5_crypto crypto,
size_t,
*confoundersize");
krb5_error_code
krb5_enctype_keysize(krb5_context
context, krb5_enctype type,
size_t *keysize);
krb5_error_code
krb5_crypto_overhead(krb5_context
context, size_t,
*padsize");
krb5_error_code
krb5_string_to_enctype(krb5_context
context, const char *string,
krb5_enctype *etype);
krb5_error_code
krb5_enctype_to_string(krb5_context
context, krb5_enctype etype,
char **string);
krb5_error_code
krb5_enctype_valid(krb5_context
context, krb5_enctype etype);
void
krb5_enctype_disable(krb5_context
context, krb5_enctype etype);
size_t
krb5_get_wrapped_length(krb5_context
context, krb5_crypto crypto,
size_t data_len);
These functions are used to encrypt and decrypt data.
krb5_encrypt_ivec()
puts the encrypted version of data (of size
len) in result. If the
encryption type supports using derived keys, usage
should be the appropriate key-usage. ivec is a pointer
to a initial IV, it is modified to the end IV at the end of the round. Ivec
should be the size of If NULL is passed in, the
default IV is used.
krb5_encrypt()
does the same as krb5_encrypt_ivec() but with
ivec being NULL.
krb5_encrypt_EncryptedData()
does the same as krb5_encrypt(), but it puts the
encrypted data in a EncryptedData structure instead.
If kvno is not zero, it will be put in the (optional)
kvno field in the
EncryptedData.
krb5_decrypt_ivec(),
krb5_decrypt(),
and
krb5_decrypt_EncryptedData()
works similarly.
krb5_decrypt_ticket()
decrypts the encrypted part of ticket with
key. krb5_decrypt_ticket()
also verifies the timestamp in the ticket, invalid flag and if the KDC
haven't verified the transited path, the transit path.
krb5_enctype_keysize(),
krb5_crypto_getconfoundersize(),
krb5_crypto_getblocksize(),
krb5_crypto_getenctype(),
krb5_crypto_getpadsize(),
krb5_crypto_overhead()
all returns various (sometimes) useful information from a crypto context.
krb5_crypto_overhead() is the combination of
krb5_crypto_getconfoundersize, krb5_crypto_getblocksize and
krb5_crypto_getpadsize and return the maximum overhead size.
krb5_enctype_to_string()
converts a encryption type number to a string that can be printable and
stored. The strings returned should be freed with
free(3).
krb5_string_to_enctype()
converts a encryption type strings to a encryption type number that can use
used for other Kerberos crypto functions.
krb5_enctype_valid()
returns 0 if the encrypt is supported and not disabled, otherwise and error
code is returned.
krb5_enctype_disable()
(globally, for all contextes) disables the
enctype.
krb5_get_wrapped_length()
returns the size of an encrypted packet by crypto of
length data_len.
| March 20, 2004 | HEIMDAL |