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Remove checks for null out value in encryption paths

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These paths are never exercised, as the parameters given are always
different cipher and plaintext `crypto_data_t` pointers.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Attila Fueloep <attila@fueloep.org>
Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>
Closes #9661 
Closes #10015
This commit is contained in:
Dirkjan Bussink
2020-03-26 18:41:57 +01:00
committed by GitHub
parent 1d2ddb9bb9
commit 112c1bff94
11 changed files with 104 additions and 217 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/icp/algs/modes/ccm.c
+14 -24
View File
@@ -68,8 +68,7 @@ ccm_mode_encrypt_contiguous_blocks(ccm_ctx_t *ctx, char *data, size_t length,
}
lastp = (uint8_t *)ctx->ccm_cb;
if (out != NULL)
crypto_init_ptrs(out, &iov_or_mp, &offset);
crypto_init_ptrs(out, &iov_or_mp, &offset);
mac_buf = (uint8_t *)ctx->ccm_mac_buf;
@@ -126,31 +125,22 @@ ccm_mode_encrypt_contiguous_blocks(ccm_ctx_t *ctx, char *data, size_t length,
ctx->ccm_processed_data_len += block_size;
if (out == NULL) {
if (ctx->ccm_remainder_len > 0) {
bcopy(blockp, ctx->ccm_copy_to,
ctx->ccm_remainder_len);
bcopy(blockp + ctx->ccm_remainder_len, datap,
need);
}
} else {
crypto_get_ptrs(out, &iov_or_mp, &offset, &out_data_1,
&out_data_1_len, &out_data_2, block_size);
crypto_get_ptrs(out, &iov_or_mp, &offset, &out_data_1,
&out_data_1_len, &out_data_2, block_size);
/* copy block to where it belongs */
if (out_data_1_len == block_size) {
copy_block(lastp, out_data_1);
} else {
bcopy(lastp, out_data_1, out_data_1_len);
if (out_data_2 != NULL) {
bcopy(lastp + out_data_1_len,
out_data_2,
block_size - out_data_1_len);
}
/* copy block to where it belongs */
if (out_data_1_len == block_size) {
copy_block(lastp, out_data_1);
} else {
bcopy(lastp, out_data_1, out_data_1_len);
if (out_data_2 != NULL) {
bcopy(lastp + out_data_1_len,
out_data_2,
block_size - out_data_1_len);
}
/* update offset */
out->cd_offset += block_size;
}
/* update offset */
out->cd_offset += block_size;
/* Update pointer to next block of data to be processed. */
if (ctx->ccm_remainder_len != 0) {