Encrypt and decrypt data security 1 OpenSSL installation

Encrypt and decrypt data Security 1 OpenSSL installation

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OpenSSL official website:https://www.openssl.org/source/

Unzip, compile, install

Unzip Openssl[email protected]:~ $ cd openssl/[email Protected]:~/openssl $ tar XF openssl-1.1.0[email Protected]:~/openssl $ CD openssl-1.1.0/compilation environment check [email protected]:~/openssl/openssl-1.1.0 $./config [Email protected]:~/openssl/ openssl-1.1.0 $ echo $?0 start compiling [email protected]:~/openssl/openssl-1.1.0 $ make-j 8[email protected]:~/openssl/ openssl-1.1.0 $ echo $?0 start installation, note permissions [email protected]:~/openssl/openssl-1.1.0 $ sudo make install[email protected]:~/ openssl/openssl-1.1.0 $ echo $?0

Test:

[Email Protected]:~/openssl $ cat main.c #include <openssl/sha.h> #include <string.h> #include <stdio.h >int Main (int argc,char** str) {if (argc<2) {printf ("%s \" string\ "\ n", str[0]); return 0;} unsigned char outmd[20];//Note that the number of characters here is 20memset (outmd,0,sizeof (OUTMD)); Sha_ctx STX; Sha1_init (&STX); Sha1_update (&stx,str[1],strlen (str[1)); Sha1_final (OUTMD,&STX); int i;for (i=0;i<20;i++) {printf ("%02x", Outmd[i]);} printf ("\ n"); return 0;} [Email Protected]:~/openssl $ gcc main.c-l crypto-wall &&./a.out "Hello Linux OpenSSL" b15f046fca47459dfbc7b01b 11e4f1a6462847fc[email Protected]:~/openssl $

Verify that the program is correct: http://encode.chahuo.com/

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Encrypt and decrypt data security 1 OpenSSL installation