Начните с проверки выходных данных:
$ openssl enc –aes-128-ecb –nosalt -p –in poraka.txt -out poraka.aes
Extra arguments given.
enc: Use -help for summary.
ОК , поэтому давайте запустим с -help
$ openssl enc -help
Usage: enc [options]
Valid options are:
-help Display this summary
-ciphers List ciphers
-in infile Input file
-out outfile Output file
-pass val Passphrase source
-e Encrypt
-d Decrypt
-p Print the iv/key
-P Print the iv/key and exit
-v Verbose output
-nopad Disable standard block padding
-salt Use salt in the KDF (default)
-nosalt Do not use salt in the KDF
-debug Print debug info
-a Base64 encode/decode, depending on encryption flag
-base64 Same as option -a
-A Used with -[base64|a] to specify base64 buffer as a single line
-bufsize val Buffer size
-k val Passphrase
-kfile infile Read passphrase from file
-K val Raw key, in hex
-S val Salt, in hex
-iv val IV in hex
-md val Use specified digest to create a key from the passphrase
-iter +int Specify the iteration count and force use of PBKDF2
-pbkdf2 Use password-based key derivation function 2
-none Don't encrypt
-* Any supported cipher
-rand val Load the file(s) into the random number generator
-writerand outfile Write random data to the specified file
-engine val Use engine, possibly a hardware device
Похоже, -p неправильно используется
$ touch poraka.txt
$ openssl enc -aes-128-ecb -nosalt -in poraka.txt -out poraka.aes
enter aes-128-ecb encryption password:
Verifying - enter aes-128-ecb encryption password:
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.
Я думаю, что это работает