Linux C 下使用openssl 进行SHA1加密
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发布时间：2019-06-27
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How to replace hash functions from openssl with gcrypt. I wondered how to do it, and hacked around. git source uses ssl, and I wanted that to change. /* Code snippet to calculate SHA1sum using openssl libs. Copyright 2005 Junichi Uekawa, given to public domain. $ gcc openssltest.c -lssl $ ./a.out < ./a.out eae8189278303caaa78f2d89e6a6ebeb7d37b554 $ sha1sum ./a.out eae8189278303caaa78f2d89e6a6ebeb7d37b554 ./a.out */ #include < stdio.h > #include < openssl / sha.h > main () { SHA_CTX s; int i, size; char c[ 512 ]; unsigned char hash[ 20 ]; SHA1_Init( & s); while ((size = read ( 0 , c, 512 )) > 0 ) SHA1_Update( & s, c, size); SHA1_Final(hash, & s); for (i = 0 ; i < 20 ; i ++ ) printf ( " %.2x " , ( int )hash[i]); printf ( " \n " ); } 本文转自 OldHawk 博客园博客，原文链接：http://www.cnblogs.com/taobataoma/archive/2007/05/11/743257.html ，如需转载请自行联系原作者
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