From 3936f02bf2d3308a7359dd37dd96cd60603d8170 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 10 Nov 2020 17:00:54 +0000 Subject: crypto/krb5: Implement Kerberos crypto core Provide core structures, an encoding-type registry and basic module and config bits for a generic Kerberos crypto library. Signed-off-by: David Howells cc: Herbert Xu cc: "David S. Miller" cc: Chuck Lever cc: Marc Dionne cc: Eric Dumazet cc: Jakub Kicinski cc: Paolo Abeni cc: Simon Horman cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-crypto@vger.kernel.org cc: netdev@vger.kernel.org --- include/crypto/krb5.h | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'include') diff --git a/include/crypto/krb5.h b/include/crypto/krb5.h index 44a6342471d7..8fa6715ab35b 100644 --- a/include/crypto/krb5.h +++ b/include/crypto/krb5.h @@ -8,6 +8,12 @@ #ifndef _CRYPTO_KRB5_H #define _CRYPTO_KRB5_H +#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. @@ -48,4 +54,52 @@ #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); + #endif /* _CRYPTO_KRB5_H */ -- cgit v1.2.3