diff options
Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_mech.c')
-rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c new file mode 100644 index 0000000000..e31cfdf7ea --- /dev/null +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -0,0 +1,655 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * linux/net/sunrpc/gss_krb5_mech.c + * + * Copyright (c) 2001-2008 The Regents of the University of Michigan. + * All rights reserved. + * + * Andy Adamson <andros@umich.edu> + * J. Bruce Fields <bfields@umich.edu> + */ + +#include <crypto/hash.h> +#include <crypto/skcipher.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/sunrpc/auth.h> +#include <linux/sunrpc/gss_krb5.h> +#include <linux/sunrpc/xdr.h> +#include <kunit/visibility.h> + +#include "auth_gss_internal.h" +#include "gss_krb5_internal.h" + +#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) +# define RPCDBG_FACILITY RPCDBG_AUTH +#endif + +static struct gss_api_mech gss_kerberos_mech; + +static const struct gss_krb5_enctype supported_gss_krb5_enctypes[] = { +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1) + /* + * AES-128 with SHA-1 (RFC 3962) + */ + { + .etype = ENCTYPE_AES128_CTS_HMAC_SHA1_96, + .ctype = CKSUMTYPE_HMAC_SHA1_96_AES128, + .name = "aes128-cts", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha1)", + .derive_key = krb5_derive_key_v2, + .encrypt = gss_krb5_aes_encrypt, + .decrypt = gss_krb5_aes_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + + .signalg = -1, + .sealalg = -1, + .keybytes = 16, + .keylength = BITS2OCTETS(128), + .Kc_length = BITS2OCTETS(128), + .Ke_length = BITS2OCTETS(128), + .Ki_length = BITS2OCTETS(128), + .cksumlength = BITS2OCTETS(96), + .keyed_cksum = 1, + }, + /* + * AES-256 with SHA-1 (RFC 3962) + */ + { + .etype = ENCTYPE_AES256_CTS_HMAC_SHA1_96, + .ctype = CKSUMTYPE_HMAC_SHA1_96_AES256, + .name = "aes256-cts", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha1)", + .derive_key = krb5_derive_key_v2, + .encrypt = gss_krb5_aes_encrypt, + .decrypt = gss_krb5_aes_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + + .signalg = -1, + .sealalg = -1, + .keybytes = 32, + .keylength = BITS2OCTETS(256), + .Kc_length = BITS2OCTETS(256), + .Ke_length = BITS2OCTETS(256), + .Ki_length = BITS2OCTETS(256), + .cksumlength = BITS2OCTETS(96), + .keyed_cksum = 1, + }, +#endif + +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_CAMELLIA) + /* + * Camellia-128 with CMAC (RFC 6803) + */ + { + .etype = ENCTYPE_CAMELLIA128_CTS_CMAC, + .ctype = CKSUMTYPE_CMAC_CAMELLIA128, + .name = "camellia128-cts-cmac", + .encrypt_name = "cts(cbc(camellia))", + .aux_cipher = "cbc(camellia)", + .cksum_name = "cmac(camellia)", + .cksumlength = BITS2OCTETS(128), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(128), + .Kc_length = BITS2OCTETS(128), + .Ke_length = BITS2OCTETS(128), + .Ki_length = BITS2OCTETS(128), + + .derive_key = krb5_kdf_feedback_cmac, + .encrypt = gss_krb5_aes_encrypt, + .decrypt = gss_krb5_aes_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, + /* + * Camellia-256 with CMAC (RFC 6803) + */ + { + .etype = ENCTYPE_CAMELLIA256_CTS_CMAC, + .ctype = CKSUMTYPE_CMAC_CAMELLIA256, + .name = "camellia256-cts-cmac", + .encrypt_name = "cts(cbc(camellia))", + .aux_cipher = "cbc(camellia)", + .cksum_name = "cmac(camellia)", + .cksumlength = BITS2OCTETS(128), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(256), + .Kc_length = BITS2OCTETS(256), + .Ke_length = BITS2OCTETS(256), + .Ki_length = BITS2OCTETS(256), + + .derive_key = krb5_kdf_feedback_cmac, + .encrypt = gss_krb5_aes_encrypt, + .decrypt = gss_krb5_aes_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, +#endif + +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2) + /* + * AES-128 with SHA-256 (RFC 8009) + */ + { + .etype = ENCTYPE_AES128_CTS_HMAC_SHA256_128, + .ctype = CKSUMTYPE_HMAC_SHA256_128_AES128, + .name = "aes128-cts-hmac-sha256-128", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha256)", + .cksumlength = BITS2OCTETS(128), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(128), + .Kc_length = BITS2OCTETS(128), + .Ke_length = BITS2OCTETS(128), + .Ki_length = BITS2OCTETS(128), + + .derive_key = krb5_kdf_hmac_sha2, + .encrypt = krb5_etm_encrypt, + .decrypt = krb5_etm_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, + /* + * AES-256 with SHA-384 (RFC 8009) + */ + { + .etype = ENCTYPE_AES256_CTS_HMAC_SHA384_192, + .ctype = CKSUMTYPE_HMAC_SHA384_192_AES256, + .name = "aes256-cts-hmac-sha384-192", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha384)", + .cksumlength = BITS2OCTETS(192), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(256), + .Kc_length = BITS2OCTETS(192), + .Ke_length = BITS2OCTETS(256), + .Ki_length = BITS2OCTETS(192), + + .derive_key = krb5_kdf_hmac_sha2, + .encrypt = krb5_etm_encrypt, + .decrypt = krb5_etm_decrypt, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, +#endif +}; + +/* + * The list of advertised enctypes is specified in order of most + * preferred to least. + */ +static char gss_krb5_enctype_priority_list[64]; + +static void gss_krb5_prepare_enctype_priority_list(void) +{ + static const u32 gss_krb5_enctypes[] = { +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2) + ENCTYPE_AES256_CTS_HMAC_SHA384_192, + ENCTYPE_AES128_CTS_HMAC_SHA256_128, +#endif +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_CAMELLIA) + ENCTYPE_CAMELLIA256_CTS_CMAC, + ENCTYPE_CAMELLIA128_CTS_CMAC, +#endif +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1) + ENCTYPE_AES256_CTS_HMAC_SHA1_96, + ENCTYPE_AES128_CTS_HMAC_SHA1_96, +#endif + }; + size_t total, i; + char buf[16]; + char *sep; + int n; + + sep = ""; + gss_krb5_enctype_priority_list[0] = '\0'; + for (total = 0, i = 0; i < ARRAY_SIZE(gss_krb5_enctypes); i++) { + n = sprintf(buf, "%s%u", sep, gss_krb5_enctypes[i]); + if (n < 0) + break; + if (total + n >= sizeof(gss_krb5_enctype_priority_list)) + break; + strcat(gss_krb5_enctype_priority_list, buf); + sep = ","; + total += n; + } +} + +/** + * gss_krb5_lookup_enctype - Retrieve profile information for a given enctype + * @etype: ENCTYPE value + * + * Returns a pointer to a gss_krb5_enctype structure, or NULL if no + * matching etype is found. + */ +VISIBLE_IF_KUNIT +const struct gss_krb5_enctype *gss_krb5_lookup_enctype(u32 etype) +{ + size_t i; + + for (i = 0; i < ARRAY_SIZE(supported_gss_krb5_enctypes); i++) + if (supported_gss_krb5_enctypes[i].etype == etype) + return &supported_gss_krb5_enctypes[i]; + return NULL; +} +EXPORT_SYMBOL_IF_KUNIT(gss_krb5_lookup_enctype); + +static struct crypto_sync_skcipher * +gss_krb5_alloc_cipher_v2(const char *cname, const struct xdr_netobj *key) +{ + struct crypto_sync_skcipher *tfm; + + tfm = crypto_alloc_sync_skcipher(cname, 0, 0); + if (IS_ERR(tfm)) + return NULL; + if (crypto_sync_skcipher_setkey(tfm, key->data, key->len)) { + crypto_free_sync_skcipher(tfm); + return NULL; + } + return tfm; +} + +static struct crypto_ahash * +gss_krb5_alloc_hash_v2(struct krb5_ctx *kctx, const struct xdr_netobj *key) +{ + struct crypto_ahash *tfm; + + tfm = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(tfm)) + return NULL; + if (crypto_ahash_setkey(tfm, key->data, key->len)) { + crypto_free_ahash(tfm); + return NULL; + } + return tfm; +} + +static int +gss_krb5_import_ctx_v2(struct krb5_ctx *ctx, gfp_t gfp_mask) +{ + struct xdr_netobj keyin = { + .len = ctx->gk5e->keylength, + .data = ctx->Ksess, + }; + struct xdr_netobj keyout; + int ret = -EINVAL; + + keyout.data = kmalloc(GSS_KRB5_MAX_KEYLEN, gfp_mask); + if (!keyout.data) + return -ENOMEM; + + /* initiator seal encryption */ + keyout.len = ctx->gk5e->Ke_length; + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_INITIATOR_SEAL, + KEY_USAGE_SEED_ENCRYPTION, gfp_mask)) + goto out; + ctx->initiator_enc = gss_krb5_alloc_cipher_v2(ctx->gk5e->encrypt_name, + &keyout); + if (ctx->initiator_enc == NULL) + goto out; + if (ctx->gk5e->aux_cipher) { + ctx->initiator_enc_aux = + gss_krb5_alloc_cipher_v2(ctx->gk5e->aux_cipher, + &keyout); + if (ctx->initiator_enc_aux == NULL) + goto out_free; + } + + /* acceptor seal encryption */ + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_ACCEPTOR_SEAL, + KEY_USAGE_SEED_ENCRYPTION, gfp_mask)) + goto out_free; + ctx->acceptor_enc = gss_krb5_alloc_cipher_v2(ctx->gk5e->encrypt_name, + &keyout); + if (ctx->acceptor_enc == NULL) + goto out_free; + if (ctx->gk5e->aux_cipher) { + ctx->acceptor_enc_aux = + gss_krb5_alloc_cipher_v2(ctx->gk5e->aux_cipher, + &keyout); + if (ctx->acceptor_enc_aux == NULL) + goto out_free; + } + + /* initiator sign checksum */ + keyout.len = ctx->gk5e->Kc_length; + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_INITIATOR_SIGN, + KEY_USAGE_SEED_CHECKSUM, gfp_mask)) + goto out_free; + ctx->initiator_sign = gss_krb5_alloc_hash_v2(ctx, &keyout); + if (ctx->initiator_sign == NULL) + goto out_free; + + /* acceptor sign checksum */ + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_ACCEPTOR_SIGN, + KEY_USAGE_SEED_CHECKSUM, gfp_mask)) + goto out_free; + ctx->acceptor_sign = gss_krb5_alloc_hash_v2(ctx, &keyout); + if (ctx->acceptor_sign == NULL) + goto out_free; + + /* initiator seal integrity */ + keyout.len = ctx->gk5e->Ki_length; + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_INITIATOR_SEAL, + KEY_USAGE_SEED_INTEGRITY, gfp_mask)) + goto out_free; + ctx->initiator_integ = gss_krb5_alloc_hash_v2(ctx, &keyout); + if (ctx->initiator_integ == NULL) + goto out_free; + + /* acceptor seal integrity */ + if (krb5_derive_key(ctx, &keyin, &keyout, KG_USAGE_ACCEPTOR_SEAL, + KEY_USAGE_SEED_INTEGRITY, gfp_mask)) + goto out_free; + ctx->acceptor_integ = gss_krb5_alloc_hash_v2(ctx, &keyout); + if (ctx->acceptor_integ == NULL) + goto out_free; + + ret = 0; +out: + kfree_sensitive(keyout.data); + return ret; + +out_free: + crypto_free_ahash(ctx->acceptor_integ); + crypto_free_ahash(ctx->initiator_integ); + crypto_free_ahash(ctx->acceptor_sign); + crypto_free_ahash(ctx->initiator_sign); + crypto_free_sync_skcipher(ctx->acceptor_enc_aux); + crypto_free_sync_skcipher(ctx->acceptor_enc); + crypto_free_sync_skcipher(ctx->initiator_enc_aux); + crypto_free_sync_skcipher(ctx->initiator_enc); + goto out; +} + +static int +gss_import_v2_context(const void *p, const void *end, struct krb5_ctx *ctx, + gfp_t gfp_mask) +{ + u64 seq_send64; + int keylen; + u32 time32; + + p = simple_get_bytes(p, end, &ctx->flags, sizeof(ctx->flags)); + if (IS_ERR(p)) + goto out_err; + ctx->initiate = ctx->flags & KRB5_CTX_FLAG_INITIATOR; + + p = simple_get_bytes(p, end, &time32, sizeof(time32)); + if (IS_ERR(p)) + goto out_err; + /* unsigned 32-bit time overflows in year 2106 */ + ctx->endtime = (time64_t)time32; + p = simple_get_bytes(p, end, &seq_send64, sizeof(seq_send64)); + if (IS_ERR(p)) + goto out_err; + atomic64_set(&ctx->seq_send64, seq_send64); + /* set seq_send for use by "older" enctypes */ + atomic_set(&ctx->seq_send, seq_send64); + if (seq_send64 != atomic_read(&ctx->seq_send)) { + dprintk("%s: seq_send64 %llx, seq_send %x overflow?\n", __func__, + seq_send64, atomic_read(&ctx->seq_send)); + p = ERR_PTR(-EINVAL); + goto out_err; + } + p = simple_get_bytes(p, end, &ctx->enctype, sizeof(ctx->enctype)); + if (IS_ERR(p)) + goto out_err; + ctx->gk5e = gss_krb5_lookup_enctype(ctx->enctype); + if (ctx->gk5e == NULL) { + dprintk("gss_kerberos_mech: unsupported krb5 enctype %u\n", + ctx->enctype); + p = ERR_PTR(-EINVAL); + goto out_err; + } + keylen = ctx->gk5e->keylength; + + p = simple_get_bytes(p, end, ctx->Ksess, keylen); + if (IS_ERR(p)) + goto out_err; + + if (p != end) { + p = ERR_PTR(-EINVAL); + goto out_err; + } + + ctx->mech_used.data = kmemdup(gss_kerberos_mech.gm_oid.data, + gss_kerberos_mech.gm_oid.len, gfp_mask); + if (unlikely(ctx->mech_used.data == NULL)) { + p = ERR_PTR(-ENOMEM); + goto out_err; + } + ctx->mech_used.len = gss_kerberos_mech.gm_oid.len; + + return gss_krb5_import_ctx_v2(ctx, gfp_mask); + +out_err: + return PTR_ERR(p); +} + +static int +gss_krb5_import_sec_context(const void *p, size_t len, struct gss_ctx *ctx_id, + time64_t *endtime, gfp_t gfp_mask) +{ + const void *end = (const void *)((const char *)p + len); + struct krb5_ctx *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), gfp_mask); + if (ctx == NULL) + return -ENOMEM; + + ret = gss_import_v2_context(p, end, ctx, gfp_mask); + memzero_explicit(&ctx->Ksess, sizeof(ctx->Ksess)); + if (ret) { + kfree(ctx); + return ret; + } + + ctx_id->internal_ctx_id = ctx; + if (endtime) + *endtime = ctx->endtime; + return 0; +} + +static void +gss_krb5_delete_sec_context(void *internal_ctx) +{ + struct krb5_ctx *kctx = internal_ctx; + + crypto_free_sync_skcipher(kctx->seq); + crypto_free_sync_skcipher(kctx->enc); + crypto_free_sync_skcipher(kctx->acceptor_enc); + crypto_free_sync_skcipher(kctx->initiator_enc); + crypto_free_sync_skcipher(kctx->acceptor_enc_aux); + crypto_free_sync_skcipher(kctx->initiator_enc_aux); + crypto_free_ahash(kctx->acceptor_sign); + crypto_free_ahash(kctx->initiator_sign); + crypto_free_ahash(kctx->acceptor_integ); + crypto_free_ahash(kctx->initiator_integ); + kfree(kctx->mech_used.data); + kfree(kctx); +} + +/** + * gss_krb5_get_mic - get_mic for the Kerberos GSS mechanism + * @gctx: GSS context + * @text: plaintext to checksum + * @token: buffer into which to write the computed checksum + * + * Return values: + * %GSS_S_COMPLETE - success, and @token is filled in + * %GSS_S_FAILURE - checksum could not be generated + * %GSS_S_CONTEXT_EXPIRED - Kerberos context is no longer valid + */ +static u32 gss_krb5_get_mic(struct gss_ctx *gctx, struct xdr_buf *text, + struct xdr_netobj *token) +{ + struct krb5_ctx *kctx = gctx->internal_ctx_id; + + return kctx->gk5e->get_mic(kctx, text, token); +} + +/** + * gss_krb5_verify_mic - verify_mic for the Kerberos GSS mechanism + * @gctx: GSS context + * @message_buffer: plaintext to check + * @read_token: received checksum to check + * + * Return values: + * %GSS_S_COMPLETE - computed and received checksums match + * %GSS_S_DEFECTIVE_TOKEN - received checksum is not valid + * %GSS_S_BAD_SIG - computed and received checksums do not match + * %GSS_S_FAILURE - received checksum could not be checked + * %GSS_S_CONTEXT_EXPIRED - Kerberos context is no longer valid + */ +static u32 gss_krb5_verify_mic(struct gss_ctx *gctx, + struct xdr_buf *message_buffer, + struct xdr_netobj *read_token) +{ + struct krb5_ctx *kctx = gctx->internal_ctx_id; + + return kctx->gk5e->verify_mic(kctx, message_buffer, read_token); +} + +/** + * gss_krb5_wrap - gss_wrap for the Kerberos GSS mechanism + * @gctx: initialized GSS context + * @offset: byte offset in @buf to start writing the cipher text + * @buf: OUT: send buffer + * @pages: plaintext to wrap + * + * Return values: + * %GSS_S_COMPLETE - success, @buf has been updated + * %GSS_S_FAILURE - @buf could not be wrapped + * %GSS_S_CONTEXT_EXPIRED - Kerberos context is no longer valid + */ +static u32 gss_krb5_wrap(struct gss_ctx *gctx, int offset, + struct xdr_buf *buf, struct page **pages) +{ + struct krb5_ctx *kctx = gctx->internal_ctx_id; + + return kctx->gk5e->wrap(kctx, offset, buf, pages); +} + +/** + * gss_krb5_unwrap - gss_unwrap for the Kerberos GSS mechanism + * @gctx: initialized GSS context + * @offset: starting byte offset into @buf + * @len: size of ciphertext to unwrap + * @buf: ciphertext to unwrap + * + * Return values: + * %GSS_S_COMPLETE - success, @buf has been updated + * %GSS_S_DEFECTIVE_TOKEN - received blob is not valid + * %GSS_S_BAD_SIG - computed and received checksums do not match + * %GSS_S_FAILURE - @buf could not be unwrapped + * %GSS_S_CONTEXT_EXPIRED - Kerberos context is no longer valid + */ +static u32 gss_krb5_unwrap(struct gss_ctx *gctx, int offset, + int len, struct xdr_buf *buf) +{ + struct krb5_ctx *kctx = gctx->internal_ctx_id; + + return kctx->gk5e->unwrap(kctx, offset, len, buf, + &gctx->slack, &gctx->align); +} + +static const struct gss_api_ops gss_kerberos_ops = { + .gss_import_sec_context = gss_krb5_import_sec_context, + .gss_get_mic = gss_krb5_get_mic, + .gss_verify_mic = gss_krb5_verify_mic, + .gss_wrap = gss_krb5_wrap, + .gss_unwrap = gss_krb5_unwrap, + .gss_delete_sec_context = gss_krb5_delete_sec_context, +}; + +static struct pf_desc gss_kerberos_pfs[] = { + [0] = { + .pseudoflavor = RPC_AUTH_GSS_KRB5, + .qop = GSS_C_QOP_DEFAULT, + .service = RPC_GSS_SVC_NONE, + .name = "krb5", + }, + [1] = { + .pseudoflavor = RPC_AUTH_GSS_KRB5I, + .qop = GSS_C_QOP_DEFAULT, + .service = RPC_GSS_SVC_INTEGRITY, + .name = "krb5i", + .datatouch = true, + }, + [2] = { + .pseudoflavor = RPC_AUTH_GSS_KRB5P, + .qop = GSS_C_QOP_DEFAULT, + .service = RPC_GSS_SVC_PRIVACY, + .name = "krb5p", + .datatouch = true, + }, +}; + +MODULE_ALIAS("rpc-auth-gss-krb5"); +MODULE_ALIAS("rpc-auth-gss-krb5i"); +MODULE_ALIAS("rpc-auth-gss-krb5p"); +MODULE_ALIAS("rpc-auth-gss-390003"); +MODULE_ALIAS("rpc-auth-gss-390004"); +MODULE_ALIAS("rpc-auth-gss-390005"); +MODULE_ALIAS("rpc-auth-gss-1.2.840.113554.1.2.2"); + +static struct gss_api_mech gss_kerberos_mech = { + .gm_name = "krb5", + .gm_owner = THIS_MODULE, + .gm_oid = { 9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" }, + .gm_ops = &gss_kerberos_ops, + .gm_pf_num = ARRAY_SIZE(gss_kerberos_pfs), + .gm_pfs = gss_kerberos_pfs, + .gm_upcall_enctypes = gss_krb5_enctype_priority_list, +}; + +static int __init init_kerberos_module(void) +{ + int status; + + gss_krb5_prepare_enctype_priority_list(); + status = gss_mech_register(&gss_kerberos_mech); + if (status) + printk("Failed to register kerberos gss mechanism!\n"); + return status; +} + +static void __exit cleanup_kerberos_module(void) +{ + gss_mech_unregister(&gss_kerberos_mech); +} + +MODULE_LICENSE("GPL"); +module_init(init_kerberos_module); +module_exit(cleanup_kerberos_module); |