Authorize an Apple Pay Payment with Merchant Decryption {#applepay-txn-auth-merch-ex}
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The topics in this section show to how to authorize an Apple Pay payment transaction with the *merchant decryption* implementation of Apple Pay

* Basic Steps: Authorizing a Payment with Merchant Decryption
* Fields Required to Authorize a Payment with Merchant Decryption
* REST Example: Authorize an American Express Payment
* REST Example: Authorize a Discover Payment
* REST Example: Authorize a JCB Payment
* REST Example: Authorize a mada Payment
* REST Example: Authorize a Mastercard Payment
* REST Example: Authorize a Visa Payment

> Support for cards varies by partner and processor. For a list of processors and cards supported with Apple Pay, see [Processors and Cards Supported with Apple Pay](/docs/cybs/en-us/apple-pay/developer/all/so/applepay/applepay-intro/applepay-ref-6-supported-processors-all.md "").
> For general information about basic authorizations, see the "Standard Payments Processing" section of the [Payments Developer Guide](https://developer.cybersource.com/docs.md#PaymentServices "").