busybox-w32/libbb/yescrypt/alg-sha256.c, branch cron_changes

libbb/yescrypt: code shrink

2025-08-01T00:21:38+00:00

function old new delta static.PBKDF2_SHA256 219 165 -54 Signed-off-by: Denys Vlasenko

libbb: introduce and use block-XOR functions

2025-07-09T05:00:59+00:00

On x86_64, they can be done in 16-byte blocks 64-bit: function old new delta xorbuf_3 - 84 +84 xorbuf64_3_aligned64 - 58 +58 smix1 687 712 +25 xwrite_encrypted 520 534 +14 xorbuf16_aligned_long - 13 +13 tls_xread_record 733 742 +9 xorbuf 21 13 -8 xorbuf_aligned_AES_BLOCK_SIZE 15 - -15 blockmix 814 762 -52 blockmix_salsa8 317 198 -119 blockmix_xor_save 1620 1499 -121 blockmix_xor 1543 1322 -221 ------------------------------------------------------------------------------ (add/remove: 4/1 grow/shrink: 3/5 up/down: 203/-536) Total: -333 bytes 32-bit: function old new delta xorbuf_3 - 76 +76 xorbuf64_3_aligned64 - 36 +36 xorbuf16_aligned_long - 23 +23 xwrite_encrypted 499 507 +8 tls_xread_record 646 650 +4 xorbuf 22 11 -11 xorbuf_aligned_AES_BLOCK_SIZE 23 - -23 blockmix 1083 938 -145 blockmix_salsa8 415 210 -205 blockmix_salsa8_xor 601 163 -438 blockmix_xor 2103 1533 -570 blockmix_xor_save 2614 1859 -755 ------------------------------------------------------------------------------ (add/remove: 4/1 grow/shrink: 2/6 up/down: 147/-2147) Total: -2000 bytes Signed-off-by: Denys Vlasenko

add libbb/yescrypt/PARAMETERS

2025-07-07T19:36:31+00:00

Signed-off-by: Denys Vlasenko

libbb/yescrypt: remove redundant SHA256 HMAC implementation

2025-07-07T06:21:44+00:00

function old new delta hmac_blocks - 88 +88 static.PBKDF2_SHA256 176 213 +37 yescrypt_kdf32_body 1046 1052 +6 static.smix 759 762 +3 hmac_block 88 64 -24 HMAC_SHA256_Final 53 - -53 HMAC_SHA256_Buf 58 - -58 HMAC_SHA256_Init 159 - -159 ------------------------------------------------------------------------------ (add/remove: 1/3 grow/shrink: 3/1 up/down: 134/-294) Total: -160 bytes Signed-off-by: Denys Vlasenko

libbb/yescrypt: shrink PBKDF2

2025-07-06T16:35:37+00:00

function old new delta static.PBKDF2_SHA256 189 176 -13 Signed-off-by: Denys Vlasenko

libbb/yescrypt: more efficient byteswapping

2025-07-06T16:27:16+00:00

function old new delta static.smix1 631 604 -27 static.smix2 452 420 -32 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-59) Total: -59 bytes Signed-off-by: Denys Vlasenko

libbb/yescrypt: code shrink

2025-07-06T09:12:13+00:00

static.PBKDF2_SHA256 - 189 +189 HMAC_SHA256_Init - 159 +159 HMAC_SHA256_Buf - 58 +58 HMAC_SHA256_Final - 53 +53 i2a64 - 42 +42 yescrypt_r 1221 1215 -6 yescrypt_kdf32_body 1064 1046 -18 i64c 42 - -42 libcperciva_HMAC_SHA256_Final 53 - -53 libcperciva_HMAC_SHA256_Buf 58 - -58 ascii64 65 - -65 libcperciva_HMAC_SHA256_Init 159 - -159 PBKDF2_SHA256 386 - -386 ------------------------------------------------------------------------------ (add/remove: 5/6 grow/shrink: 0/2 up/down: 501/-787) Total: -286 bytes Signed-off-by: Denys Vlasenko

libbb/yescrypt: code shrink

2025-07-06T09:02:03+00:00

function old new delta libcperciva_HMAC_SHA256_Final 56 53 -3 Signed-off-by: Denys Vlasenko

Move "sha256-hash a memory array and produce the digest" helper to libbb

2025-07-06T08:50:46+00:00

Signed-off-by: Denys Vlasenko

libbb/yescrypt: remove extra sha256 implementation

2025-07-06T08:35:22+00:00

function old new delta libcperciva_HMAC_SHA256_Init - 159 +159 libcperciva_HMAC_SHA256_Final - 56 +56 SHA256_Buf - 40 +40 static.smix 753 759 +6 yescrypt_kdf32_body 1059 1060 +1 .rodata 105803 105799 -4 initial_state 32 - -32 libcperciva_SHA256_Init 37 - -37 static.cpu_to_be32_vect 51 - -51 _HMAC_SHA256_Final 55 - -55 PAD 64 - -64 libcperciva_HMAC_SHA256_Buf 132 58 -74 libcperciva_SHA256_Buf 86 - -86 SHA256_Pad_Almost 131 - -131 _SHA256_Final 195 - -195 _SHA256_Update 198 - -198 _HMAC_SHA256_Init 213 - -213 Krnd 256 - -256 PBKDF2_SHA256 1003 386 -617 SHA256_Transform 3083 - -3083 ------------------------------------------------------------------------------ (add/remove: 3/12 grow/shrink: 2/3 up/down: 262/-5096) Total: -4834 bytes Signed-off-by: Denys Vlasenko