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gubi/rsa-encryption.md

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Revisions

  1. gubi revised this gist Nov 18, 2013. No changes.
  2. gubi revised this gist Nov 18, 2013. No changes.
  3. @carlj carlj renamed this gist Sep 10, 2013. 1 changed file with 0 additions and 0 deletions.
    0 gistfile1.md → rsa-encryption.md
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    File renamed without changes.
  4. @carlj carlj revised this gist Sep 10, 2013. 1 changed file with 2 additions and 0 deletions.
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    @@ -46,3 +46,5 @@ openssl rsautl -decrypt -inkey private.pem -in aesKey.txt.crypted -out aesKey.tx
    openssl enc -d -aes-256-cbc -in file.enc -out file.txt.decrypted -pass file:./aesKey.txt.decrypted
    ```

    ##Source
    [Public – Private key encryption using OpenSSL](http://www.devco.net/archives/2006/02/13/public_-_private_key_encryption_using_openssl.php)
  5. @carlj carlj revised this gist Sep 10, 2013. 1 changed file with 1 addition and 1 deletion.
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    @@ -14,7 +14,7 @@ openssl rsa -in private.pem -out public.pem -outform PEM -pubout

    ###Generate AES Key
    ```
    //generate a Radnom 32 Byte AES Key
    //generate a Radnom 32 Byte (256 Bit) AES Key
    openssl rand -base64 32 -out aesKey.txt
    ```

  6. @carlj carlj revised this gist Sep 10, 2013. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion gistfile1.md
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    @@ -15,7 +15,7 @@ openssl rsa -in private.pem -out public.pem -outform PEM -pubout
    ###Generate AES Key
    ```
    //generate a Radnom 32 Byte AES Key
    openssl rand -base64 32 > aesKey.txt
    openssl rand -base64 32 -out aesKey.txt
    ```

    ##Encryption
  7. @carlj carlj created this gist Sep 10, 2013.
    48 changes: 48 additions & 0 deletions gistfile1.md
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    #RSA File De- and Encryption
    Docu for encrypt and decrypt a large file with AES and RSA

    ##Keypairs

    ###Generate RSA Keypairs
    ```
    //generates a private Key with 8196 Bit
    openssl genrsa -out private.pem 8196
    //strips out the public key from the private key
    openssl rsa -in private.pem -out public.pem -outform PEM -pubout
    ```

    ###Generate AES Key
    ```
    //generate a Radnom 32 Byte AES Key
    openssl rand -base64 32 > aesKey.txt
    ```

    ##Encryption

    ###Encrypt File with AES Key
    ```
    //encryp the file.txt with the generated AES Key to the file.enc
    openssl enc -aes-256-cbc -salt -in file.txt -out file.enc -pass file:./aesKey.txt
    ```

    ###Encrypt AES Key with RSA Public Key
    ```
    //encrpyt the AES Key with the RSA Public Key
    openssl rsautl -encrypt -inkey public.pem -pubin -in aesKey.txt -out aesKey.txt.crypted
    ```

    ##Decryption

    ###Decrypt AES Key with RSA Private Key
    ```
    //decrypt the AES Key with the Private RSA Key
    openssl rsautl -decrypt -inkey private.pem -in aesKey.txt.crypted -out aesKey.txt.decrypted
    ```

    ###Decryp File with AES Key
    ```
    //decrypt the encrypted file with the encrypted AES Key
    openssl enc -d -aes-256-cbc -in file.enc -out file.txt.decrypted -pass file:./aesKey.txt.decrypted
    ```