65 lines
2.0 KiB
Cython
65 lines
2.0 KiB
Cython
# cython: language_level = 3
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import sys
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from libc.stdlib cimport malloc
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from libc.string cimport memcpy, strlen, memset
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cdef extern from "openssl/sha.h":
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void SHA512_Init(void *)
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void SHA512_Update(void *, const void *, size_t)
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int SHA512_Final(unsigned char *, void *)
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cdef union u:
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unsigned long long d[16]
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unsigned char p[16*8]
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ctypedef struct SHA512_CTX:
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unsigned long long h[8]
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unsigned long long Nl, Nh
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u u
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unsigned int num, md_len
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cdef sha512(const char *string, char output_buffer[129]):
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cdef unsigned char hash[64]
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cdef SHA512_CTX sha512
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SHA512_Init(&sha512)
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SHA512_Update(&sha512, string, strlen(string))
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SHA512_Final(hash, &sha512)
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cdef int i
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cdef const char *hex = "0123456789abcdef";
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for i in range(64):
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output_buffer[i * 2] = hex[hash[i] // 16]
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output_buffer[i * 2 + 1] = hex[hash[i] % 16]
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output_buffer[128] = 0
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cpdef search():
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cdef int repeat = 10
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cdef char *suffix = b"AFPy"
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cdef unsigned int size = repeat + strlen(suffix)
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cdef char *candidate = <char *> malloc(size + 1)
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cdef char *digest;
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cdef char output_buffer[129];
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memset(candidate, b'-', size)
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memcpy(candidate + size - strlen(suffix), suffix, strlen(suffix))
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candidate[size] = 0
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cdef unsigned int i = 0;
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while True:
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candidate[9] = i % 58 + 65;
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candidate[8] = <char>(i / 58 ** 1) % 58 + 65;
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candidate[7] = <char>(i / 58 ** 2) % 58 + 65;
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candidate[6] = <char>(i / 58 ** 3) % 58 + 65;
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candidate[5] = <char>(i / 58 ** 4) % 58 + 65;
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candidate[4] = <char>(i / 58 ** 5) % 58 + 65;
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candidate[3] = <char>(i / 58 ** 6) % 58 + 65;
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candidate[2] = <char>(i / 58 ** 7) % 58 + 65;
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candidate[1] = <char>(i / 58 ** 8) % 58 + 65;
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candidate[0] = <char>(i / 58 ** 9) % 58 + 65;
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i += 1
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sha512(candidate, output_buffer)
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if output_buffer.startswith(b"00000"):
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print(f"sha512({candidate!r}) = {output_buffer}")
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sys.exit(0)
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print("Not found")
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