From 378c6697a282c383d89428380a3405bf95189347 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 22 Aug 2006 20:33:54 +1000 Subject: [PATCH] [SUNRPC] GSS: Use block ciphers where applicable This patch converts SUNRPC/GSS to use the new block cipher type where applicable. Signed-off-by: Herbert Xu --- include/linux/sunrpc/gss_krb5.h | 19 ++++----- include/linux/sunrpc/gss_spkm3.h | 4 +- net/sunrpc/auth_gss/gss_krb5_crypto.c | 57 +++++++++++++++------------ net/sunrpc/auth_gss/gss_krb5_mech.c | 24 +++++------ net/sunrpc/auth_gss/gss_krb5_seqnum.c | 4 +- net/sunrpc/auth_gss/gss_krb5_wrap.c | 4 +- net/sunrpc/auth_gss/gss_spkm3_mech.c | 29 +++++++------- 7 files changed, 76 insertions(+), 65 deletions(-) diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h index 1279280d7196..e30ba201910a 100644 --- a/include/linux/sunrpc/gss_krb5.h +++ b/include/linux/sunrpc/gss_krb5.h @@ -46,8 +46,8 @@ struct krb5_ctx { unsigned char seed[16]; int signalg; int sealalg; - struct crypto_tfm *enc; - struct crypto_tfm *seq; + struct crypto_blkcipher *enc; + struct crypto_blkcipher *seq; s32 endtime; u32 seq_send; struct xdr_netobj mech_used; @@ -136,26 +136,27 @@ gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset, u32 -krb5_encrypt(struct crypto_tfm * key, +krb5_encrypt(struct crypto_blkcipher *key, void *iv, void *in, void *out, int length); u32 -krb5_decrypt(struct crypto_tfm * key, +krb5_decrypt(struct crypto_blkcipher *key, void *iv, void *in, void *out, int length); int -gss_encrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *outbuf, int offset, - struct page **pages); +gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf, + int offset, struct page **pages); int -gss_decrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *inbuf, int offset); +gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf, + int offset); s32 -krb5_make_seq_num(struct crypto_tfm * key, +krb5_make_seq_num(struct crypto_blkcipher *key, int direction, s32 seqnum, unsigned char *cksum, unsigned char *buf); s32 -krb5_get_seq_num(struct crypto_tfm * key, +krb5_get_seq_num(struct crypto_blkcipher *key, unsigned char *cksum, unsigned char *buf, int *direction, s32 * seqnum); diff --git a/include/linux/sunrpc/gss_spkm3.h b/include/linux/sunrpc/gss_spkm3.h index 336e218c2782..2cf3fbb40b4f 100644 --- a/include/linux/sunrpc/gss_spkm3.h +++ b/include/linux/sunrpc/gss_spkm3.h @@ -19,9 +19,9 @@ struct spkm3_ctx { unsigned int req_flags ; struct xdr_netobj share_key; int conf_alg; - struct crypto_tfm* derived_conf_key; + struct crypto_blkcipher *derived_conf_key; int intg_alg; - struct crypto_tfm* derived_integ_key; + struct crypto_blkcipher *derived_integ_key; int keyestb_alg; /* alg used to get share_key */ int owf_alg; /* one way function */ }; diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c index 76b969e6904f..57192dfe3065 100644 --- a/net/sunrpc/auth_gss/gss_krb5_crypto.c +++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c @@ -49,7 +49,7 @@ u32 krb5_encrypt( - struct crypto_tfm *tfm, + struct crypto_blkcipher *tfm, void * iv, void * in, void * out, @@ -58,26 +58,27 @@ krb5_encrypt( u32 ret = -EINVAL; struct scatterlist sg[1]; u8 local_iv[16] = {0}; + struct blkcipher_desc desc = { .tfm = tfm, .info = local_iv }; dprintk("RPC: krb5_encrypt: input data:\n"); print_hexl((u32 *)in, length, 0); - if (length % crypto_tfm_alg_blocksize(tfm) != 0) + if (length % crypto_blkcipher_blocksize(tfm) != 0) goto out; - if (crypto_tfm_alg_ivsize(tfm) > 16) { + if (crypto_blkcipher_ivsize(tfm) > 16) { dprintk("RPC: gss_k5encrypt: tfm iv size to large %d\n", - crypto_tfm_alg_ivsize(tfm)); + crypto_blkcipher_ivsize(tfm)); goto out; } if (iv) - memcpy(local_iv, iv, crypto_tfm_alg_ivsize(tfm)); + memcpy(local_iv, iv, crypto_blkcipher_ivsize(tfm)); memcpy(out, in, length); sg_set_buf(sg, out, length); - ret = crypto_cipher_encrypt_iv(tfm, sg, sg, length, local_iv); + ret = crypto_blkcipher_encrypt_iv(&desc, sg, sg, length); dprintk("RPC: krb5_encrypt: output data:\n"); print_hexl((u32 *)out, length, 0); @@ -90,7 +91,7 @@ EXPORT_SYMBOL(krb5_encrypt); u32 krb5_decrypt( - struct crypto_tfm *tfm, + struct crypto_blkcipher *tfm, void * iv, void * in, void * out, @@ -99,25 +100,26 @@ krb5_decrypt( u32 ret = -EINVAL; struct scatterlist sg[1]; u8 local_iv[16] = {0}; + struct blkcipher_desc desc = { .tfm = tfm, .info = local_iv }; dprintk("RPC: krb5_decrypt: input data:\n"); print_hexl((u32 *)in, length, 0); - if (length % crypto_tfm_alg_blocksize(tfm) != 0) + if (length % crypto_blkcipher_blocksize(tfm) != 0) goto out; - if (crypto_tfm_alg_ivsize(tfm) > 16) { + if (crypto_blkcipher_ivsize(tfm) > 16) { dprintk("RPC: gss_k5decrypt: tfm iv size to large %d\n", - crypto_tfm_alg_ivsize(tfm)); + crypto_blkcipher_ivsize(tfm)); goto out; } if (iv) - memcpy(local_iv,iv, crypto_tfm_alg_ivsize(tfm)); + memcpy(local_iv,iv, crypto_blkcipher_ivsize(tfm)); memcpy(out, in, length); sg_set_buf(sg, out, length); - ret = crypto_cipher_decrypt_iv(tfm, sg, sg, length, local_iv); + ret = crypto_blkcipher_decrypt_iv(&desc, sg, sg, length); dprintk("RPC: krb5_decrypt: output_data:\n"); print_hexl((u32 *)out, length, 0); @@ -240,7 +242,7 @@ EXPORT_SYMBOL(make_checksum); struct encryptor_desc { u8 iv[8]; /* XXX hard-coded blocksize */ - struct crypto_tfm *tfm; + struct blkcipher_desc desc; int pos; struct xdr_buf *outbuf; struct page **pages; @@ -285,8 +287,8 @@ encryptor(struct scatterlist *sg, void *data) if (thislen == 0) return 0; - ret = crypto_cipher_encrypt_iv(desc->tfm, desc->outfrags, desc->infrags, - thislen, desc->iv); + ret = crypto_blkcipher_encrypt_iv(&desc->desc, desc->outfrags, + desc->infrags, thislen); if (ret) return ret; if (fraglen) { @@ -305,16 +307,18 @@ encryptor(struct scatterlist *sg, void *data) } int -gss_encrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *buf, int offset, - struct page **pages) +gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *buf, + int offset, struct page **pages) { int ret; struct encryptor_desc desc; - BUG_ON((buf->len - offset) % crypto_tfm_alg_blocksize(tfm) != 0); + BUG_ON((buf->len - offset) % crypto_blkcipher_blocksize(tfm) != 0); memset(desc.iv, 0, sizeof(desc.iv)); - desc.tfm = tfm; + desc.desc.tfm = tfm; + desc.desc.info = desc.iv; + desc.desc.flags = 0; desc.pos = offset; desc.outbuf = buf; desc.pages = pages; @@ -329,7 +333,7 @@ EXPORT_SYMBOL(gss_encrypt_xdr_buf); struct decryptor_desc { u8 iv[8]; /* XXX hard-coded blocksize */ - struct crypto_tfm *tfm; + struct blkcipher_desc desc; struct scatterlist frags[4]; int fragno; int fraglen; @@ -355,8 +359,8 @@ decryptor(struct scatterlist *sg, void *data) if (thislen == 0) return 0; - ret = crypto_cipher_decrypt_iv(desc->tfm, desc->frags, desc->frags, - thislen, desc->iv); + ret = crypto_blkcipher_decrypt_iv(&desc->desc, desc->frags, + desc->frags, thislen); if (ret) return ret; if (fraglen) { @@ -373,15 +377,18 @@ decryptor(struct scatterlist *sg, void *data) } int -gss_decrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *buf, int offset) +gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *buf, + int offset) { struct decryptor_desc desc; /* XXXJBF: */ - BUG_ON((buf->len - offset) % crypto_tfm_alg_blocksize(tfm) != 0); + BUG_ON((buf->len - offset) % crypto_blkcipher_blocksize(tfm) != 0); memset(desc.iv, 0, sizeof(desc.iv)); - desc.tfm = tfm; + desc.desc.tfm = tfm; + desc.desc.info = desc.iv; + desc.desc.flags = 0; desc.fragno = 0; desc.fraglen = 0; return process_xdr_buf(buf, offset, buf->len - offset, decryptor, &desc); diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index 70e1e53a632b..325e72e4fd31 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -34,6 +34,7 @@ * */ +#include #include #include #include @@ -78,10 +79,10 @@ simple_get_netobj(const void *p, const void *end, struct xdr_netobj *res) } static inline const void * -get_key(const void *p, const void *end, struct crypto_tfm **res) +get_key(const void *p, const void *end, struct crypto_blkcipher **res) { struct xdr_netobj key; - int alg, alg_mode; + int alg; char *alg_name; p = simple_get_bytes(p, end, &alg, sizeof(alg)); @@ -93,18 +94,19 @@ get_key(const void *p, const void *end, struct crypto_tfm **res) switch (alg) { case ENCTYPE_DES_CBC_RAW: - alg_name = "des"; - alg_mode = CRYPTO_TFM_MODE_CBC; + alg_name = "cbc(des)"; break; default: printk("gss_kerberos_mech: unsupported algorithm %d\n", alg); goto out_err_free_key; } - if (!(*res = crypto_alloc_tfm(alg_name, alg_mode))) { + *res = crypto_alloc_blkcipher(alg_name, 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(*res)) { printk("gss_kerberos_mech: unable to initialize crypto algorithm %s\n", alg_name); + *res = NULL; goto out_err_free_key; } - if (crypto_cipher_setkey(*res, key.data, key.len)) { + if (crypto_blkcipher_setkey(*res, key.data, key.len)) { printk("gss_kerberos_mech: error setting key for crypto algorithm %s\n", alg_name); goto out_err_free_tfm; } @@ -113,7 +115,7 @@ get_key(const void *p, const void *end, struct crypto_tfm **res) return p; out_err_free_tfm: - crypto_free_tfm(*res); + crypto_free_blkcipher(*res); out_err_free_key: kfree(key.data); p = ERR_PTR(-EINVAL); @@ -172,9 +174,9 @@ gss_import_sec_context_kerberos(const void *p, return 0; out_err_free_key2: - crypto_free_tfm(ctx->seq); + crypto_free_blkcipher(ctx->seq); out_err_free_key1: - crypto_free_tfm(ctx->enc); + crypto_free_blkcipher(ctx->enc); out_err_free_mech: kfree(ctx->mech_used.data); out_err_free_ctx: @@ -187,8 +189,8 @@ static void gss_delete_sec_context_kerberos(void *internal_ctx) { struct krb5_ctx *kctx = internal_ctx; - crypto_free_tfm(kctx->seq); - crypto_free_tfm(kctx->enc); + crypto_free_blkcipher(kctx->seq); + crypto_free_blkcipher(kctx->enc); kfree(kctx->mech_used.data); kfree(kctx); } diff --git a/net/sunrpc/auth_gss/gss_krb5_seqnum.c b/net/sunrpc/auth_gss/gss_krb5_seqnum.c index c53ead39118d..c604baf3a5f6 100644 --- a/net/sunrpc/auth_gss/gss_krb5_seqnum.c +++ b/net/sunrpc/auth_gss/gss_krb5_seqnum.c @@ -41,7 +41,7 @@ #endif s32 -krb5_make_seq_num(struct crypto_tfm *key, +krb5_make_seq_num(struct crypto_blkcipher *key, int direction, s32 seqnum, unsigned char *cksum, unsigned char *buf) @@ -62,7 +62,7 @@ krb5_make_seq_num(struct crypto_tfm *key, } s32 -krb5_get_seq_num(struct crypto_tfm *key, +krb5_get_seq_num(struct crypto_blkcipher *key, unsigned char *cksum, unsigned char *buf, int *direction, s32 * seqnum) diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c index 89d1f3e14128..f179415d0c38 100644 --- a/net/sunrpc/auth_gss/gss_krb5_wrap.c +++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c @@ -149,7 +149,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset, goto out_err; } - blocksize = crypto_tfm_alg_blocksize(kctx->enc); + blocksize = crypto_blkcipher_blocksize(kctx->enc); gss_krb5_add_padding(buf, offset, blocksize); BUG_ON((buf->len - offset) % blocksize); plainlen = blocksize + buf->len - offset; @@ -346,7 +346,7 @@ gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf) /* Copy the data back to the right position. XXX: Would probably be * better to copy and encrypt at the same time. */ - blocksize = crypto_tfm_alg_blocksize(kctx->enc); + blocksize = crypto_blkcipher_blocksize(kctx->enc); data_start = ptr + 22 + blocksize; orig_start = buf->head[0].iov_base + offset; data_len = (buf->head[0].iov_base + buf->head[0].iov_len) - data_start; diff --git a/net/sunrpc/auth_gss/gss_spkm3_mech.c b/net/sunrpc/auth_gss/gss_spkm3_mech.c index 88dcb52d171b..bdedf456bc17 100644 --- a/net/sunrpc/auth_gss/gss_spkm3_mech.c +++ b/net/sunrpc/auth_gss/gss_spkm3_mech.c @@ -34,6 +34,7 @@ * */ +#include #include #include #include @@ -83,10 +84,11 @@ simple_get_netobj(const void *p, const void *end, struct xdr_netobj *res) } static inline const void * -get_key(const void *p, const void *end, struct crypto_tfm **res, int *resalg) +get_key(const void *p, const void *end, struct crypto_blkcipher **res, + int *resalg) { struct xdr_netobj key = { 0 }; - int alg_mode,setkey = 0; + int setkey = 0; char *alg_name; p = simple_get_bytes(p, end, resalg, sizeof(*resalg)); @@ -98,14 +100,12 @@ get_key(const void *p, const void *end, struct crypto_tfm **res, int *resalg) switch (*resalg) { case NID_des_cbc: - alg_name = "des"; - alg_mode = CRYPTO_TFM_MODE_CBC; + alg_name = "cbc(des)"; setkey = 1; break; case NID_cast5_cbc: /* XXXX here in name only, not used */ - alg_name = "cast5"; - alg_mode = CRYPTO_TFM_MODE_CBC; + alg_name = "cbc(cast5)"; setkey = 0; /* XXX will need to set to 1 */ break; case NID_md5: @@ -113,19 +113,20 @@ get_key(const void *p, const void *end, struct crypto_tfm **res, int *resalg) dprintk("RPC: SPKM3 get_key: NID_md5 zero Key length\n"); } alg_name = "md5"; - alg_mode = 0; setkey = 0; break; default: dprintk("gss_spkm3_mech: unsupported algorithm %d\n", *resalg); goto out_err_free_key; } - if (!(*res = crypto_alloc_tfm(alg_name, alg_mode))) { + *res = crypto_alloc_blkcipher(alg_name, 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(*res)) { printk("gss_spkm3_mech: unable to initialize crypto algorthm %s\n", alg_name); + *res = NULL; goto out_err_free_key; } if (setkey) { - if (crypto_cipher_setkey(*res, key.data, key.len)) { + if (crypto_blkcipher_setkey(*res, key.data, key.len)) { printk("gss_spkm3_mech: error setting key for crypto algorthm %s\n", alg_name); goto out_err_free_tfm; } @@ -136,7 +137,7 @@ get_key(const void *p, const void *end, struct crypto_tfm **res, int *resalg) return p; out_err_free_tfm: - crypto_free_tfm(*res); + crypto_free_blkcipher(*res); out_err_free_key: if(key.len > 0) kfree(key.data); @@ -204,9 +205,9 @@ gss_import_sec_context_spkm3(const void *p, size_t len, return 0; out_err_free_key2: - crypto_free_tfm(ctx->derived_integ_key); + crypto_free_blkcipher(ctx->derived_integ_key); out_err_free_key1: - crypto_free_tfm(ctx->derived_conf_key); + crypto_free_blkcipher(ctx->derived_conf_key); out_err_free_s_key: kfree(ctx->share_key.data); out_err_free_mech: @@ -223,8 +224,8 @@ static void gss_delete_sec_context_spkm3(void *internal_ctx) { struct spkm3_ctx *sctx = internal_ctx; - crypto_free_tfm(sctx->derived_integ_key); - crypto_free_tfm(sctx->derived_conf_key); + crypto_free_blkcipher(sctx->derived_integ_key); + crypto_free_blkcipher(sctx->derived_conf_key); kfree(sctx->share_key.data); kfree(sctx->mech_used.data); kfree(sctx); -- 2.34.1