MAJOR=4 MINOR=5 DEVNAME=tty5 33File not found. 5 m5/* SPDX-License-Identifier: GPL-2.0-or-later */ /* Kerberos 5 crypto * * Copyright (C) 2025 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #ifndef _CRYPTO_KRB5_H #define _CRYPTO_KRB5_H #include #include #include struct crypto_shash; struct scatterlist; /* * Per Kerberos v5 protocol spec crypto types from the wire. These get mapped * to linux kernel crypto routines. */ #define KRB5_ENCTYPE_NULL 0x0000 #define KRB5_ENCTYPE_DES_CBC_CRC 0x0001 /* DES cbc mode with CRC-32 */ #define KRB5_ENCTYPE_DES_CBC_MD4 0x0002 /* DES cbc mode with RSA-MD4 */ #define KRB5_ENCTYPE_DES_CBC_MD5 0x0003 /* DES cbc mode with RSA-MD5 */ #define KRB5_ENCTYPE_DES_CBC_RAW 0x0004 /* DES cbc mode raw */ /* XXX deprecated? */ #define KRB5_ENCTYPE_DES3_CBC_SHA 0x0005 /* DES-3 cbc mode with NIST-SHA */ #define KRB5_ENCTYPE_DES3_CBC_RAW 0x0006 /* DES-3 cbc mode raw */ #define KRB5_ENCTYPE_DES_HMAC_SHA1 0x0008 #define KRB5_ENCTYPE_DES3_CBC_SHA1 0x0010 #define KRB5_ENCTYPE_AES128_CTS_HMAC_SHA1_96 0x0011 #define KRB5_ENCTYPE_AES256_CTS_HMAC_SHA1_96 0x0012 #define KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128 0x0013 #define KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192 0x0014 #define KRB5_ENCTYPE_ARCFOUR_HMAC 0x0017 #define KRB5_ENCTYPE_ARCFOUR_HMAC_EXP 0x0018 #define KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC 0x0019 #define KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC 0x001a #define KRB5_ENCTYPE_UNKNOWN 0x01ff #define KRB5_CKSUMTYPE_CRC32 0x0001 #define KRB5_CKSUMTYPE_RSA_MD4 0x0002 #define KRB5_CKSUMTYPE_RSA_MD4_DES 0x0003 #define KRB5_CKSUMTYPE_DESCBC 0x0004 #define KRB5_CKSUMTYPE_RSA_MD5 0x0007 #define KRB5_CKSUMTYPE_RSA_MD5_DES 0x0008 #define KRB5_CKSUMTYPE_NIST_SHA 0x0009 #define KRB5_CKSUMTYPE_HMAC_SHA1_DES3 0x000c #define KRB5_CKSUMTYPE_HMAC_SHA1_96_AES128 0x000f #define KRB5_CKSUMTYPE_HMAC_SHA1_96_AES256 0x0010 #define KRB5_CKSUMTYPE_CMAC_CAMELLIA128 0x0011 #define KRB5_CKSUMTYPE_CMAC_CAMELLIA256 0x0012 #define KRB5_CKSUMTYPE_HMAC_SHA256_128_AES128 0x0013 #define KRB5_CKSUMTYPE_HMAC_SHA384_192_AES256 0x0014 #define KRB5_CKSUMTYPE_HMAC_MD5_ARCFOUR -138 /* Microsoft md5 hmac cksumtype */ /* * Constants used for key derivation */ /* from rfc3961 */ #define KEY_USAGE_SEED_CHECKSUM (0x99) #define KEY_USAGE_SEED_ENCRYPTION (0xAA) #define KEY_USAGE_SEED_INTEGRITY (0x55) /* * Mode of operation. */ enum krb5_crypto_mode { KRB5_CHECKSUM_MODE, /* Checksum only */ KRB5_ENCRYPT_MODE, /* Fully encrypted, possibly with integrity checksum */ }; struct krb5_buffer { unsigned int len; void *data; }; /* * Kerberos encoding type definition. */ struct krb5_enctype { int etype; /* Encryption (key) type */ int ctype; /* Checksum type */ const char *name; /* "Friendly" name */ const char *encrypt_name; /* Crypto encrypt+checksum name */ const char *cksum_name; /* Crypto checksum name */ const char *hash_name; /* Crypto hash name */ const char *derivation_enc; /* Cipher used in key derivation */ u16 block_len; /* Length of encryption block */ u16 conf_len; /* Length of confounder (normally == block_len) */ u16 cksum_len; /* Length of checksum */ u16 key_bytes; /* Length of raw key, in bytes */ u16 key_len; /* Length of final key, in bytes */ u16 hash_len; /* Length of hash in bytes */ u16 prf_len; /* Length of PRF() result in bytes */ u16 Kc_len; /* Length of Kc in bytes */ u16 Ke_len; /* Length of Ke in bytes */ u16 Ki_len; /* Length of Ki in bytes */ bool keyed_cksum; /* T if a keyed cksum */ const struct krb5_crypto_profile *profile; int (*random_to_key)(const struct krb5_enctype *krb5, const struct krb5_buffer *in, struct krb5_buffer *out); /* complete key generation */ }; /* * krb5_api.c */ const struct krb5_enctype *crypto_krb5_find_enctype(u32 enctype); size_t crypto_krb5_how_much_buffer(const struct krb5_enctype *krb5, enum krb5_crypto_mode mode, size_t data_size, s