diff options
| -rw-r--r-- | crypto/Makefile | 1 | ||||
| -rw-r--r-- | crypto/drbg.c | 29 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.h | 3 | ||||
| -rw-r--r-- | include/crypto/drbg.h | 2 |
4 files changed, 29 insertions, 6 deletions
diff --git a/crypto/Makefile b/crypto/Makefile index 99cc64ac70ef..bd6a029094e6 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_CRYPTO_ECDH) += ecdh_generic.o $(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h $(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h +$(obj)/rsa_helper.o: $(obj)/rsapubkey-asn1.h $(obj)/rsaprivkey-asn1.h clean-files += rsapubkey-asn1.c rsapubkey-asn1.h clean-files += rsaprivkey-asn1.c rsaprivkey-asn1.h diff --git a/crypto/drbg.c b/crypto/drbg.c index fb33f7d3b052..053035b5c8f8 100644 --- a/crypto/drbg.c +++ b/crypto/drbg.c @@ -262,6 +262,7 @@ static int drbg_kcapi_sym_ctr(struct drbg_state *drbg, u8 *inbuf, u32 inbuflen, u8 *outbuf, u32 outlen); #define DRBG_CTR_NULL_LEN 128 +#define DRBG_OUTSCRATCHLEN DRBG_CTR_NULL_LEN /* BCC function for CTR DRBG as defined in 10.4.3 */ static int drbg_ctr_bcc(struct drbg_state *drbg, @@ -1644,6 +1645,9 @@ static int drbg_fini_sym_kernel(struct drbg_state *drbg) kfree(drbg->ctr_null_value_buf); drbg->ctr_null_value = NULL; + kfree(drbg->outscratchpadbuf); + drbg->outscratchpadbuf = NULL; + return 0; } @@ -1708,6 +1712,15 @@ static int drbg_init_sym_kernel(struct drbg_state *drbg) drbg->ctr_null_value = (u8 *)PTR_ALIGN(drbg->ctr_null_value_buf, alignmask + 1); + drbg->outscratchpadbuf = kmalloc(DRBG_OUTSCRATCHLEN + alignmask, + GFP_KERNEL); + if (!drbg->outscratchpadbuf) { + drbg_fini_sym_kernel(drbg); + return -ENOMEM; + } + drbg->outscratchpad = (u8 *)PTR_ALIGN(drbg->outscratchpadbuf, + alignmask + 1); + return alignmask; } @@ -1737,15 +1750,16 @@ static int drbg_kcapi_sym_ctr(struct drbg_state *drbg, u8 *outbuf, u32 outlen) { struct scatterlist sg_in; + int ret; sg_init_one(&sg_in, inbuf, inlen); while (outlen) { - u32 cryptlen = min_t(u32, inlen, outlen); + u32 cryptlen = min3(inlen, outlen, (u32)DRBG_OUTSCRATCHLEN); struct scatterlist sg_out; - int ret; - sg_init_one(&sg_out, outbuf, cryptlen); + /* Output buffer may not be valid for SGL, use scratchpad */ + sg_init_one(&sg_out, drbg->outscratchpad, cryptlen); skcipher_request_set_crypt(drbg->ctr_req, &sg_in, &sg_out, cryptlen, drbg->V); ret = crypto_skcipher_encrypt(drbg->ctr_req); @@ -1761,14 +1775,19 @@ static int drbg_kcapi_sym_ctr(struct drbg_state *drbg, break; } default: - return ret; + goto out; } init_completion(&drbg->ctr_completion); + memcpy(outbuf, drbg->outscratchpad, cryptlen); + outlen -= cryptlen; } + ret = 0; - return 0; +out: + memzero_explicit(drbg->outscratchpad, DRBG_OUTSCRATCHLEN); + return ret; } #endif /* CONFIG_CRYPTO_DRBG_CTR */ diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h index ec64fbcdeb49..199b0bb69b89 100644 --- a/drivers/crypto/chelsio/chcr_algo.h +++ b/drivers/crypto/chelsio/chcr_algo.h @@ -422,7 +422,7 @@ static inline void get_aes_decrypt_key(unsigned char *dec_key, { u32 temp; u32 w_ring[MAX_NK]; - int i, j, k = 0; + int i, j, k; u8 nr, nk; switch (keylength) { @@ -460,6 +460,7 @@ static inline void get_aes_decrypt_key(unsigned char *dec_key, temp = w_ring[i % nk]; i++; } + i--; for (k = 0, j = i % nk; k < nk; k++) { *((u32 *)dec_key + k) = htonl(w_ring[j]); j--; diff --git a/include/crypto/drbg.h b/include/crypto/drbg.h index 61580b19f9f6..22f884c97387 100644 --- a/include/crypto/drbg.h +++ b/include/crypto/drbg.h @@ -124,6 +124,8 @@ struct drbg_state { struct skcipher_request *ctr_req; /* CTR mode request handle */ __u8 *ctr_null_value_buf; /* CTR mode unaligned buffer */ __u8 *ctr_null_value; /* CTR mode aligned zero buf */ + __u8 *outscratchpadbuf; /* CTR mode output scratchpad */ + __u8 *outscratchpad; /* CTR mode aligned outbuf */ struct completion ctr_completion; /* CTR mode async handler */ int ctr_async_err; /* CTR mode async error */ |