使用python将Private key(string)转换为DER格式

pip install cryptography

from cryptography.hazmat.primitives import serialization

private_key_str = "私钥字符串"

# 将私钥字符串转换为字节类型
private_key_bytes = private_key_str.encode('utf-8')

# 使用cryptography库加载私钥
private_key = serialization.load_pem_private_key(
    private_key_bytes,
    password=None
)

# 将私钥转换为DER格式
private_key_der = private_key.private_bytes(
    encoding=serialization.Encoding.DER,
    format=serialization.PrivateFormat.PKCS8,
    encryption_algorithm=serialization.NoEncryption()
)

# 将DER格式的私钥转换为字符串
private_key_der_str = private_key_der.hex()

print(private_key_der_str)