OpenSSL 密钥加/解密大文件

You can generate RSA public and private keys but when it comes to encrypting a large file using this command:

openssl rsautl -encrypt -pubin -inkey public.pem -in LargeFile.zip -out LargeFile_encrypted.zip

It generates the following error:

RSA operation error:
3020:error:0406D06E:rsa routines:RSA_padding_add_PKCS1_type_2:data too large for key size:.\crypto\rsa\rsa_pk1.c:151:

The Solution is SMIME:

1. Generate private and public keys.

openssl req -x509 -nodes -days 100000 -newkey rsa:2048  -keyout privatekey.pem  -out publickey.pem

2. Encrypt seemingly endless amount of data.

openssl  smime  -encrypt -aes256  -in  LargeFile.zip  -binary  -outform DEM  -out  LargeFile_encrypted.zip  publickey.pem

3. Decrypt

openssl  smime -decrypt  -in  LargeFile_encrypted.zip  -binary -inform DEM -inkey privatekey.pem  -out  LargeFile.zip