Description of Figure 1a Provider searching and Figure 1b Specific provider requested

Link to figures in Java Cryptography Architecture (JCA) Reference Guide

Link to figures in How to Implement a Provider

Figure 1a Provider searching

This image consists of five cylinders that represent the following:

An arrow representing a call to MessageDigest.getInstance("SHA-256") starts from the Application cylinder and passes through the following cylinders in the indicated order:

  1. Provider Framework
  2. ProviderA
  3. ProviderB
  4. Provider Framework

The arrow ends at the Application cylinder. The call to MessageDigest.getInstance("SHA-256") has returned a SHA-256 message digest implementation from ProviderB.

Figure 1b Specific provider requested

This image consists of five cylinders that represent the following:

An arrow representing a call to MessageDigest.getInstance("SHA-256", "ProviderC") starts from the Application cylinder and passes through the following cylinders in the indicated order:

  1. Provider Framework
  2. ProviderC
  3. Provider Framework

The arrow ends at the Application cylinder. The call to MessageDigest.getInstance("SHA-256", "ProviderC") has returned a SHA-256 message digest implementation from ProviderC.


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