NAME
krb5_c_block_size, krb5_c_decrypt, krb5_c_encrypt, krb5_c_encrypt_length,
krb5_c_enctype_compare, krb5_c_get_checksum, krb5_c_is_coll_proof_cksum,
krb5_c_is_keyed_cksum, krb5_c_keylength, krb5_c_make_checksum,
krb5_c_make_random_key, krb5_c_set_checksum, krb5_c_valid_cksumtype,
krb5_c_valid_enctype, krb5_c_verify_checksum, krb5_c_checksum_length -
Kerberos 5 crypto API
LIBRARY
Kerberos 5 Library (libkrb5, -lkrb5)
SYNOPSIS
#include <krb5.h>
krb5_error_code
krb5_c_block_size(krb5_context context, krb5_enctype enctype,
size_t *blocksize);
krb5_error_code
krb5_c_decrypt(krb5_context context, const krb5_keyblock key,
krb5_keyusage usage, const krb5_data *ivec, krb5_enc_data *input,
krb5_data *output);
krb5_error_code
krb5_c_encrypt(krb5_context context, const krb5_keyblock *key,
krb5_keyusage usage, const krb5_data *ivec,
const krb5_data *input, krb5_enc_data *output);
krb5_error_code
krb5_c_encrypt_length(krb5_context context, krb5_enctype enctype,
size_t inputlen, size_t *length);
krb5_error_code
krb5_c_enctype_compare(krb5_context context, krb5_enctype e1,
krb5_enctype e2, krb5_boolean *similar);
krb5_error_code
krb5_c_make_random_key(krb5_context context, krb5_enctype enctype,
krb5_keyblock *random_key);
krb5_error_code
krb5_c_make_checksum(krb5_context context, krb5_cksumtype cksumtype,
const krb5_keyblock *key, krb5_keyusage usage,
const krb5_data *input, krb5_checksum *cksum);
krb5_error_code
krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
krb5_keyusage usage, const krb5_data *data,
const krb5_checksum *cksum, krb5_boolean *valid);
krb5_error_code
krb5_c_checksum_length(krb5_context context, krb5_cksumtype cksumtype,
size_t *length);
krb5_error_code
krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
krb5_cksumtype *type, krb5_data **data);
krb5_error_code
krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
krb5_cksumtype type, const krb5_data *data);
krb5_boolean
krb5_c_valid_enctype(krb5_enctype, etype");
krb5_boolean
krb5_c_valid_cksumtype(krb5_cksumtype ctype);
krb5_boolean
krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype);
krb5_boolean
krb5_c_is_keyed_cksum(krb5_cksumtype ctype);
krb5_error_code
krb5_c_keylengths(krb5_context context, krb5_enctype enctype,
size_t *inlength, size_t *keylength);
DESCRIPTION
The functions starting with krb5_c are compat functions with MIT
kerberos.
The krb5_enc_data structure holds and encrypted data. There are two
public accessable members of krb5_enc_data. enctype that holds the
encryption type of the data encrypted and ciphertext that is a krb5_data
that might contain the encrypted data.
krb5_c_block_size() returns the blocksize of the encryption type.
krb5_c_decrypt() decrypts input and store the data in output. If ivec is
NULL the default initialization vector for that encryption type will be
used.
krb5_c_encrypt() encrypts the plaintext in input and store the ciphertext
in output.
krb5_c_encrypt_length() returns the length the encrypted data given the
plaintext length.
krb5_c_enctype_compare() compares to encryption types and returns if they
use compatible encryption key types.
krb5_c_make_checksum() creates a checksum cksum with the checksum type
cksumtype of the data in data. key and usage are used if the checksum is
a keyed checksum type. Returns 0 or an error code.
krb5_c_verify_checksum() verifies the checksum of data in cksum that was
created with key using the key usage usage. verify is set to non-zero if
the checksum verifies correctly and zero if not. Returns 0 or an error
code.
krb5_c_checksum_length() returns the length of the checksum.
krb5_c_set_checksum() sets the krb5_checksum structure given type and
data. The content of cksum should be freeed with
krb5_c_free_checksum_contents().
krb5_c_get_checksum() retrieves the components of the krb5_checksum.
structure. data should be free with krb5_free_data(). If some either of
data or checksum is not needed for the application, NULL can be passed
in.
krb5_c_valid_enctype() returns true if etype is a valid encryption type.
krb5_c_valid_cksumtype() returns true if ctype is a valid checksum type.
krb5_c_is_keyed_cksum() return true if ctype is a keyed checksum type.
krb5_c_is_coll_proof_cksum() returns true if ctype is a collition proof
checksum type.
krb5_c_keylengths() return the minimum length ( inlength) bytes needed to
create a key and the length ( keylength) of the resulting key for the
enctype.
SEE ALSO
krb5(3), krb5_create_checksum(3), krb5_free_data(3), kerberos(8)