ds007-payment-wallet-attestation.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Payment Wallet Attestation",
  "description": "Schema for Payment Wallet Attestation (PWA) credentials.",
  "type": "object",
  "properties": {
    "iss": {
      "description": "Issuer of the credential.",
      "type": "string"
    },
    "aud": {
      "description": "Intended audience of the credential.",
      "type": "string"
    },
    "sub": {
      "description": "Unique identifier assigned and retained by the PSP for the holder.",
      "type": "string"
    },
    "iat": {
      "description": "Time of issuance.",
      "type": "number"
    },
    "nbf": {
      "description": "Not to be used before this time.",
      "type": "number"
    },
    "exp": {
      "description": "Expiry time of the credential.",
      "type": "number"
    },
    "vct": {
      "description": "Currently, the supported value is PaymentWalletAttestation.",
      "type": "string",
      "enum": ["PaymentWalletAttestation"]
    },
    "jti": {
      "description": "Unique identifier assigned and retained by the PSP for this credential.",
      "type": "string"
    },
    "fundingSource": {
      "description": "Details about the funding source for which the PWA is valid.",
      "type": "object",
      "properties": {
        "type": {
          "description": "Type of funding source, supported values are account, card, and any.",
          "type": "string",
          "enum": ["account", "card", "any"]
        },
        "panLastFour": {
          "description": "Last four digits of the Primary Account Number (PAN).",
          "type": "string",
          "pattern": "^[0-9]{4}$"
        },
        "iin": {
          "description": "Issuer Identification Number (IIN), also called Bank Identification Number (BIN).",
          "type": "string",
          "pattern": "^[0-9]{6,8}$"
        },
        "parLastFour": {
          "description": "Last four characters of the EMV Payment Account Reference (PAR).",
          "type": "string",
          "maxLength": 4
        },
        "ibanLastFour": {
          "description": "Last four characters of the account's IBAN.",
          "type": "string",
          "pattern": "^[A-Z0-9]{4}$"
        },
        "bic": {
          "description": "Bank Identifier Code (BIC) as per ISO 9362.",
          "type": "string"
        },
        "sortCode": {
          "description": "National bank sort or routing code.",
          "type": "string"
        },
        "aliasId": {
          "description": "Unique identifier assigned and retained by the PSP for the funding source.",
          "type": "string"
        },
        "currency": {
          "description": "Currency for the funding source in 3-letter alphabetic code.",
          "type": "string",
          "pattern": "^[A-Z]{3}$"
        },
        "scheme": {
          "description": "Scheme of the funding source.",
          "type": "string",
          "enum": [
            "Visa",
            "American Express",
            "Discover",
            "JCB",
            "Mastercard",
            "UnionPay",
            "SEPA",
            "SEPA SCT",
            "SEPA SCT Inst"
          ]
        },
        "icon": {
          "description": "URI to logo or card art.",
          "type": "string",
          "format": "uri"
        }
      }
    },
    "cnf": {
      "description": "Object containing information for cryptographic holder binding.",
      "type": "object",
      "properties": {
        "jwk": {
          "description": "JSON Web Key as per specification.",
          "type": "object",
          "properties": {
            "kty": {
              "description": "Key type.",
              "type": "string"
            },
            "crv": {
              "description": "Curve of the key.",
              "type": "string"
            },
            "x": {
              "description": "The x-coordinate for the elliptic curve point.",
              "type": "string"
            },
            "y": {
              "description": "The y-coordinate for the elliptic curve point.",
              "type": "string"
            }
          },
          "required": ["kty", "crv", "x", "y"]
        }
      },
      "required": ["jwk"]
    }
  },
  "required": ["iss", "sub", "iat", "vct", "fundingSource", "cnf"],
  "allOf": [
    {
      "if": {
        "properties": {
          "fundingSource": {
            "properties": {
              "type": {
                "const": "card"
              }
            }
          }
        }
      },
      "then": {
        "properties": {
          "fundingSource": {
            "required": ["panLastFour", "iin"]
          }
        }
      }
    },
    {
      "if": {
        "properties": {
          "fundingSource": {
            "properties": {
              "type": {
                "const": "account"
              }
            }
          }
        }
      },
      "then": {
        "properties": {
          "fundingSource": {
            "required": ["ibanLastFour", "bic"]
          }
        }
      }
    },
    {
      "if": {
        "properties": {
          "fundingSource": {
            "properties": {
              "type": {
                "const": "any"
              }
            }
          }
        }
      },
      "then": {
        "properties": {
          "fundingSource": {
            "not": {
              "anyOf": [
                {
                  "required": ["aliasId"]
                },
                {
                  "required": ["currency"]
                },
                {
                  "required": ["scheme"]
                },
                {
                  "required": ["icon"]
                }
              ]
            }
          }
        }
      }
    }
  ]
}