---
id: object/codeunit/1475
type: object
title: Codeunit 1475 "RSA"
summary: Codeunit 1475 "RSA" in System Application (System.Security.Encryption). 7 public procedures. Introduced in BC25, still in BC30, changed in BC27.
tier: official
language: en
tags:
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  - system application
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  last_changed: "27"
  deprecated: null
review:
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  at: null
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generated:
  at: "2026-10-11T00:31:51.816Z"
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evidence:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Cryptography%20Management/src/RSA.Codeunit.al
    title: src/System Application/App/Cryptography Management/src/RSA.Codeunit.al (releases/29.x)
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    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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object_type: codeunit
object_id: 1475
name: RSA
namespace: System.Security.Encryption
app: System Application
extends: null
first_version: "25"
last_version: "30"
present_in:
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
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source_major: "29"
obsolete: null
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counts:
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---

# Codeunit 1475 "RSA"

> Codeunit 1475 "RSA" in System Application (System.Security.Encryption). 7 public procedures. Introduced in BC25, still in BC30, changed in BC27.

System Application · System.Security.Encryption · BC25-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Cryptography%20Management/src/RSA.Codeunit.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Public |

## Procedures

- `InitializeRSA(KeySize: Integer)`: Initializes a new instance of RSA with the specified key size.
- `ToSecretXmlString(PrivateKey: SecretText; IncludePrivateParameters: Boolean): SecretText`: Creates a RSA object with private key and returns the XML string.
- `ToSecretXmlString(IncludePrivateParameters: Boolean): SecretText`: Creates and returns an XML string containing the key of the current RSA object.
- `SignData(XmlString: SecretText; DataInStream: InStream; HashAlgorithm: Enum "Hash Algorithm"; RSASignaturePadding: Enum "RSA Signature Padding"; SignatureOutStream: OutStream)`: Computes the hash value of the specified data and signs it.
- `VerifyData(XmlString: SecretText; DataInStream: InStream; HashAlgorithm: Enum "Hash Algorithm"; RSASignaturePadding: Enum "RSA Signature Padding"; SignatureInStream: InStream): Boolean`: Verifies that a digital signature is valid by determining the hash value in the signature using the provided public key and comparing it to the hash value of the provided data.
- `Encrypt(XmlString: SecretText; PlainTextInStream: InStream; OaepPadding: Boolean; EncryptedTextOutStream: OutStream)`: Encrypts the specified text with the RSA algorithm.
- `Decrypt(XmlString: SecretText; EncryptedTextInStream: InStream; OaepPadding: Boolean; DecryptedTextOutStream: OutStream)`: Decrypts the specified text that was previously encrypted with the RSA algorithm.

## Calls

From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete.

- [Codeunit 1476 "RSA Impl."](../codeunit/1476.md) (6 calls: `Decrypt → Decrypt`, `Encrypt → Encrypt`, `InitializeRSA → InitializeRSA`, …)

## Across versions

- Present in: BC25-30
- Changed (declaration) in: BC27

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). The call sections above are our own, per object, from the BC29 call graph. For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "codeunit", object_name: "RSA")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.