4/11/2023 0 Comments Github openssl(Note: no endorsement is made of git-remote-gcrypt's security.) For encrypting an entire repository, consider using a system like git-remote-gcrypt instead. Where git-crypt really shines is where most of your repository is public, but you have a few files (perhaps private keys named *.key, or a file with API credentials) which you need to encrypt. As such, git-crypt is not the best tool for encrypting most or all of the files in a repository. Verify a signed digest: openssl dgst -sha512 -verify public_key.pem -signature digest.sha512 file.Git-crypt relies on git filters, which were not designed with encryption in mind. -passin pass:your_password - (optional) your password for private key encrypt.Ĭreating a signed digest of a file: openssl dgst -sha512 -sign private_key.pem -out digest.sha512 file.txt.That should be in PEM format and can be encrypted by password. -inkey private.key - file name of your private key.Decrypt a fileĭecrypt binary file: openssl smime -decrypt -binary -in -inform DER -out decrypted.zip -inkey private.key -passin pass:your_passwordįor text files: openssl smime -decrypt -in encrypted_input.txt -inform DER -out decrypted_input.zip -inkey private.key -passin pass:your_password That command can very effectively a strongly encrypt any file regardless of its size or format. yourSslCertificate.pem - file name of your certificate's.If is not specified, file is encoded by base64 and file size will be increased by 30%. -outform DER - encode output file as binary.If not specified 40 bit RC2 is used (very weak). -aes-256-cbc - chosen cipher AES in 256 bit for encryption (strong).It is necessary for all binary files (like a images, sounds, ZIP archives). Normally the input message is converted to "canonical" format as required by the S/MIME specification, this switch disable it. -encrypt - chosen method for file process.smime - ssl command for S/MIME utility (smime(1)).With existing encrypted (unecrypted) private key: openssl req -x509 -new -days 100000 -key private_key.pem -out certificate.pemĮncrypt binary file: openssl smime -encrypt -binary -aes-256-cbc -in plainfile.zip -out -outform DER yourSslCertificate.pemĮncrypt text file: openssl smime -encrypt -aes-256-cbc -in input.txt -out output.txt -outform DER yourSslCertificate.pem With encrypted private key: openssl req -x509 -days 100000 -newkey rsa:8912 -keyout private_key.pem -out certificate.pem With unecrypted private key: openssl req -x509 -nodes -days 100000 -newkey rsa:8912 -keyout private_key.pem -out certificate.pem Openssl rsa -in private.pem -pubout -out public.pem Private key generation (encrypted private key): openssl genrsa -aes256 -out private.pem 8912 Ultimate solution for safe and high secured encode anyone file in OpenSSL and command-line: The recipient will need to decrypt the key with their private key, then decrypt the data with the resulting key. Package the encrypted key file with the encrypted data.Encrypt the data using openssl enc, using the generated key from step 1.Encrypt the key file using openssl rsautl.Generate a key using openssl rand, e.g.You can't directly encrypt a large file using rsautl. To decrypt: openssl rsautl -decrypt -inkey private.key -in encrypted.txt -out plaintext.txt To encrypt: openssl rsautl -encrypt -pubin -inkey public.key -in plaintext.txt -out encrypted.txt Openssl rsa -in private.key -pubout -out public.key openssl genrsa -aes256 -out private.key 8912 To decrypt: openssl aes-256-cbc -salt -a -d -in encrypted.txt -out plaintext.txtįor Asymmetric encryption you must first generate your private key and extract the public key. To encrypt: openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt For symmetic encryption, you can use the following:
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