Unlock AWS Security: Import Custom Key Material into Asymmetric KMS Keys | DevOps
"AWS KMS Mastery: Importing Your Own Key Material for Advanced Security!"
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"Custom Key Material in AWS Asymmetric KMS: Your Complete Guide!"
"AWS Security Deep Dive: Importing Key Material into Asymmetric KMS!"
"Boost AWS Security: Import Your Own Key Material with Asymmetric KMS!"
This AWS CLI command is used to retrieve the public key and import token parameters required for importing key material into AWS Key Management Service (KMS). It takes the --key-id parameter, specifying the identifier of the KMS key, and --wrapping-algorithm and --wrapping-key-spec parameters to specify the wrapping algorithm and key spec used for key wrapping.
Command: aws kms get-parameters-for-import --key-id --wrapping-algorithm RSA_AES_KEY_WRAP_SHA_256 --wrapping-key-spec RSA_2048
vi PunlicKey.b64 (Copy Public Key section only and paste in this File)
This OpenSSL command decodes the base64-encoded public key from PublicKey.b64 and saves it as binary data in WrappingPublicKey.bin.
Command: openssl enc -d -base64 -A -in PublicKey.b64 -out WrappingPublicKey.bin
vi ImportToken.b64 (Copy Public Key section only and paste in this File)
This OpenSSL command decodes the base64-encoded public key from ImportToken.b64 and saves it as binary data in ImportToken.bin.
Command: openssl enc -d -base64 -A -in importtoken.b64 -out ImportToken.bin
This OpenSSL command generates a new RSA private key with 2048 bits, converts it to PKCS#8 format, and saves it as binary data in RSA_2048_PrivateKey.der.
Command: openssl genpkey -algorithm rsa -pkeyopt rsa_keygen_bits:2048 | openssl pkcs8 -topk8 -outform der -nocrypt - RSA_2048_PrivateKey.der
This OpenSSL command generates a random AES key of 32 bytes (256 bits) and saves it as binary data in aes-key.bin.
Command: openssl rand -out aes-key.bin 32
This OpenSSL command wraps (encrypts) the AES key using the RSA private key (RSA_2048_PrivateKey.der) and saves the wrapped key as binary data in key-material-wrapped.bin.
Command: openssl enc -id-aes256-wrap-pad -K "$(xxd -p - aes-key.bin | tr -d '\n')" -iv A65959A6 -in RSA_2048_PrivateKey.der -out key-material-wrapped.bin
This OpenSSL command encrypts the AES key using the wrapping public key (WrappingPublicKey.bin) and saves the encrypted key as binary data in aes-key-wrapped.bin. OAEP padding with SHA-256 hash is used for encryption.
Command: openssl pkeyutl -encrypt -in aes-key.bin -out aes-key-wrapped.bin -inkey WrappingPublicKey.bin -keyform DER -pubin -pkeyopt rsa_padding_mode:oaep -pkeyopt rsa_oaep_md:sha256 -pkeyopt rsa_mgf1_md:sha256
This command concatenates the wrapped AES key and the wrapped key material into a single file named EncryptedKeyMaterial.bin.
Command: cat aes-key-wrapped.bin key-material-wrapped.bin - EncryptedKeyMaterial.bin
This AWS CLI command is used to import encrypted key material into AWS KMS. It takes the --key-id parameter, specifying the identifier of the KMS key, --encrypted-key-material parameter specifying the file containing the encrypted key material, --import-token parameter specifying the file containing the import token, --expiration-model parameter specifying the expiration model for the key material, and --valid-to parameter specifying the expiration date and time for the key material.
Command: aws kms import-key-material --key-id f959fb67-72cd-4106-8918-fabb3a0a363d --encrypted-key-material fileb://EncryptedKeyMaterial.bin --import-token fileb://ImportToken.bin --expiration-model KEY_MATERIAL_EXPIRES --valid-to 2024-12-31T12:00:00-08:00