mcp_decrypt_pii_item

Decrypt encrypted personally identifiable information (PII) data items using advanced cryptographic methods. Specify the encrypted value and PII type to retrieve the original data.

Instructions

MCP Tool: PII 항목 복호화

Args:
    encrypted_value (str): 복호화할 암호화된 값
    pii_type (str): PII 유형
    
Returns:
    Dict[str, Any]: 복호화 결과

Input Schema

TableJSON Schema

Name	Required	Description	Default
`encrypted_value`	Yes
`pii_type`	Yes

Implementation Reference

mcp_pii_tools.py:618-649 (handler)

MCP tool handler function for mcp_decrypt_pii_item. Instantiates PIICrypto and calls its decrypt_pii_item method, returning a standardized response dictionary.

@mcp.tool()
def mcp_decrypt_pii_item(encrypted_value: str, pii_type: str) -> Dict[str, Any]:
    """
    MCP Tool: PII 항목 복호화
    
    Args:
        encrypted_value (str): 복호화할 암호화된 값
        pii_type (str): PII 유형
        
    Returns:
        Dict[str, Any]: 복호화 결과
    """
    try:
        crypto = PIICrypto()
        decrypted_value = crypto.decrypt_pii_item(encrypted_value, pii_type)
        
        return {
            "success": True,
            "encrypted_value": encrypted_value,
            "decrypted_value": decrypted_value,
            "pii_type": pii_type,
            "decryption_method": "deterministic" if pii_type in crypto.deterministic_types else "fpe"
        }
    except Exception as e:
        return {
            "success": False,
            "error": str(e),
            "encrypted_value": encrypted_value,
            "decrypted_value": "",
            "pii_type": pii_type
        }

mcp_pii_tools.py:930-947 (schema)

JSON schema and metadata definition for the decrypt_pii_item tool in MCP_TOOLS dictionary, specifying parameters, types, descriptions, and required fields.

"decrypt_pii_item": {
    "name": "decrypt_pii_item",
    "description": "암호화된 PII 항목을 복호화합니다.",
    "parameters": {
        "type": "object",
        "properties": {
            "encrypted_value": {
                "type": "string",
                "description": "복호화할 암호화된 값"
            },
            "pii_type": {
                "type": "string",
                "description": "PII 유형 (암호화 시 사용한 유형과 동일해야 함)"
            }
        },
        "required": ["encrypted_value", "pii_type"]
    }
},

pii_crypto.py:475-496 (helper)

Core helper method in PIICrypto class that performs the actual decryption: chooses deterministic_decrypt or fpe_decrypt based on pii_type.

def decrypt_pii_item(self, encrypted_value: str, pii_type: str) -> str:
    """
    암호화된 PII 항목을 복호화
    
    Args:
        encrypted_value: 암호화된 값
        pii_type: PII 유형
        
    Returns:
        복호화된 값
    """
    if not encrypted_value:
        return encrypted_value
    
    if pii_type in self.deterministic_types:
        return self.deterministic_decrypt(encrypted_value, pii_type)
    elif pii_type in self.fpe_types:
        return self.fpe_decrypt(encrypted_value, pii_type)
    else:
        # 기본적으로 결정론적 복호화 사용
        return self.deterministic_decrypt(encrypted_value, pii_type)

MCP PII Tools