Linux

PGP and GPG Secure Data Communication on two Linux machine

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If you really loves Linux or more familiar with it and want to communicate securely between two Linux machine then follow the simple steps as bellow. In windows you can also communicate securely. Secure Data Communication on two Linux machine with PGP/GPG. 1. First Generate public/private key pair using sshd-generate on both Linux  machine. To … Read more

Encrypt Large File with public key Via OpenSSL

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You can use “rsautl” to encrypt and decrypt small message files but when it comes to large files it’ll shows the error as bellowError:RSA operation error6408:error:0406D06E:rsa routines:RSA_padding_add_PKCS1_type_2:data too large forkey size:./crypto/rsa/rsa_pk1.c:151: So it’s better to use SMIME to perform large file Encryption.Generate private and public key pairs:openssl req -x509 -nodes -days 1000 -newkey rsa:1024 -keyout … Read more