为了满足安全性要求,AWS建议定期更换加密密钥。一旦密钥更换,加密过的旧数据将无法使用新密钥进行解密,并可能导致功能失效。
以下是用于解决这个问题的步骤:
以下是Python代码示例:
import boto3
# Step 1: Get old key ID of encrypted data
kms = boto3.client('kms')
response = kms.describe_key(key_id='old_key_id')
# Step 2: Get new key ID
new_key_id = 'new_key_id'
# Step 3: Decrypt old data
encrypted_data = b'ENCRYPTED_DATA'
decrypted_data = kms.decrypt(CiphertextBlob=encrypted_data)
# Step 4: Encrypt data with new key ID
new_encrypted_data = kms.encrypt(KeyId=new_key_id, Plaintext=decrypted_data['Plaintext'])
# Step 5: Update data with new key ID
s3 = boto3.client('s3')
s3.put_object(Body=new_encrypted_data['CiphertextBlob'], Key='object_key')