Optimized sha256 hash

opt-lib/sha256/.gitignore

@@ -0,0 +1,2 @@
+/main
+/*.o

opt-lib/sha256/Makefile

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+CC = clang-19
+LD = ld.lld-19
+
+# -flto enables Link Time Optimization for better cross-module optimization (~4% cycle reduction)
+# May increase compile time and can occasionally cause issues with specific toolchain configurations
+
+CFLAGS = --target=riscv64 -march=rv64imc_zba_zbb_zbc_zbs -flto \
+		-O3 -g \
+		-nodefaultlibs \
+		-isystem ../../deps/musl/release/include \
+		-fdata-sections -ffunction-sections
+
+LDFLAGS = -static --gc-sections -L../../deps/musl/release/lib -L../../deps/compiler-rt-builtins-riscv/build \
+		-lc -lgcc -lcompiler-rt
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+all: main.o sha256.o
+	$(LD) $(LDFLAGS) -o main $^
+	llvm-strip -s main
+
+run:
+	ckb-debugger --bin main
+
+asm: sha256.o
+	llvm-objdump-19 -d -S sha256.o
+
+fmt:
+	clang-format --style="{BasedOnStyle: Google, IndentWidth: 4}" -i *.c *.h
+
+clean:
+	rm -f main.o sha256.o main

opt-lib/sha256/README.md

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+## Setup
+
+```sh
+$ cd $ROOT/deps/musl
+$ CLANG=clang-19 bash ckb/build.sh
+
+$ cd $ROOT/deps/compiler-rt-builtins-riscv
+$ make CC=clang-19 AR=llvm-ar-19
+```

opt-lib/sha256/main.c

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+#include <stdio.h>
+#include <string.h>
+
+#include "sha256.h"
+
+int test_ax1000000() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const char *message = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
+
+    sha256_init(&ctx);
+    for (int i = 0; i < 25000; i++) {
+        sha256_update(&ctx, (const SHA256_BYTE *)message, strlen(message));
+    }
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92, 0x81, 0xa1, 0xc7,
+        0xe2, 0x84, 0xd7, 0x3e, 0x67, 0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97,
+        0x20, 0x0e, 0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_chain() {
+    SHA256_BYTE hash[32] = {};
+    for (int i = 0; i < 25000; i++) {
+        SHA256_CTX ctx;
+        sha256_init(&ctx);
+        sha256_update(&ctx, hash, 32);
+        sha256_final(&ctx, hash);
+    }
+    SHA256_BYTE want[32] = {
+        0xde, 0x49, 0x2c, 0x0e, 0x28, 0xd3, 0x77, 0x06, 0xda, 0xc0, 0x48,
+        0x97, 0xe9, 0xc8, 0x25, 0xee, 0x01, 0x4b, 0x1e, 0x85, 0xbc, 0x27,
+        0x7b, 0x3c, 0xdd, 0xbd, 0x9a, 0x56, 0x64, 0x51, 0xd7, 0xb6,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_empty() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const char *message = "";
+
+    sha256_init(&ctx);
+    sha256_update(&ctx, (const SHA256_BYTE *)message, strlen(message));
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4,
+        0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b,
+        0x93, 0x4c, 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_hello_world() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const char *message = "Hello, World!";
+
+    sha256_init(&ctx);
+    sha256_update(&ctx, (const SHA256_BYTE *)message, strlen(message));
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0xdf, 0xfd, 0x60, 0x21, 0xbb, 0x2b, 0xd5, 0xb0, 0xaf, 0x67, 0x62,
+        0x90, 0x80, 0x9e, 0xc3, 0xa5, 0x31, 0x91, 0xdd, 0x81, 0xc7, 0xf7,
+        0x0a, 0x4b, 0x28, 0x68, 0x8a, 0x36, 0x21, 0x82, 0x98, 0x6f,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_len_57() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const SHA256_BYTE message[57] = {
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+    };
+
+    sha256_init(&ctx);
+    sha256_update(&ctx, (const SHA256_BYTE *)message, 57);
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0xb6, 0xd6, 0xbc, 0xbe, 0x1a, 0xca, 0x25, 0x0c, 0xc8, 0x44, 0xa9,
+        0xc5, 0x63, 0x3a, 0xb9, 0x0c, 0x3f, 0x74, 0xf5, 0x3e, 0xc3, 0xcd,
+        0xa5, 0x95, 0x0a, 0x8d, 0x9a, 0x4a, 0x77, 0xb0, 0x86, 0xb4,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_rc4_16() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const SHA256_BYTE message[16] = {
+        0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a,
+        0x8a, 0x06, 0x1e, 0x67, 0x57, 0x6e, 0x92, 0x6d,
+    };
+
+    sha256_init(&ctx);
+    sha256_update(&ctx, (const SHA256_BYTE *)message, 16);
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0x06, 0x7c, 0x53, 0x12, 0x69, 0x73, 0x5c, 0xa7, 0xf5, 0x41, 0xfd,
+        0xac, 0xa8, 0xf0, 0xdc, 0x76, 0x30, 0x5d, 0x3c, 0xad, 0xa1, 0x40,
+        0xf8, 0x93, 0x72, 0xa4, 0x10, 0xfe, 0x5e, 0xff, 0x6e, 0x4d,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int test_rc4_55() {
+    SHA256_CTX ctx;
+    SHA256_BYTE hash[32];
+    const SHA256_BYTE message[55] = {
+        0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a, 0x8a, 0x06, 0x1e,
+        0x67, 0x57, 0x6e, 0x92, 0x6d, 0xc7, 0x1a, 0x7f, 0xa3, 0xf0, 0xcc,
+        0xeb, 0x97, 0x45, 0x2b, 0x4d, 0x32, 0x27, 0x96, 0x5f, 0x9e, 0xa8,
+        0xcc, 0x75, 0x07, 0x6d, 0x9f, 0xb9, 0xc5, 0x41, 0x7a, 0xa5, 0xcb,
+        0x30, 0xfc, 0x22, 0x19, 0x8b, 0x34, 0x98, 0x2d, 0xbb, 0x62, 0x9e,
+    };
+
+    sha256_init(&ctx);
+    sha256_update(&ctx, (const SHA256_BYTE *)message, 55);
+    sha256_final(&ctx, hash);
+
+    SHA256_BYTE want[32] = {
+        0x03, 0x80, 0x51, 0xe9, 0xc3, 0x24, 0x39, 0x3b, 0xd1, 0xca, 0x19,
+        0x78, 0xdd, 0x09, 0x52, 0xc2, 0xaa, 0x37, 0x42, 0xca, 0x4f, 0x1b,
+        0xd5, 0xcd, 0x46, 0x11, 0xce, 0xa8, 0x38, 0x92, 0xd3, 0x82,
+    };
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] != want[i]) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int main() {
+    if (test_ax1000000() != 0) {
+        return 1;
+    }
+    if (test_chain() != 0) {
+        return 1;
+    }
+    if (test_empty() != 0) {
+        return 1;
+    }
+    if (test_hello_world() != 0) {
+        return 1;
+    }
+    if (test_len_57() != 0) {
+        return 1;
+    }
+    if (test_rc4_16() != 0) {
+        return 1;
+    }
+    if (test_rc4_55() != 0) {
+        return 1;
+    }
+    return 0;
+}