---
title: SHA sign and return Base64 (RSA Key)
slug: sha-sign-and-return-base64-rsa-key
docTags: 
createdAt: 2021-07-26T08:55:33.000Z
---

This hashes/signs your input with a provided key using SHA256 algorithm and returns a Base64 value. The RSA key expected here is a private key certificate
		
for example, if your certificate looks like this:

*-----BEGIN RSA PRIVATE KEY-----
*
*MIIEpAIBAAKCAQEA3qfjPkhbTPKJQqLm+KfHP14wJ2U318Rh/4TV8xLi605xFW7r
*
*ApzXzLLxBb7zSkBc9wFIEH7wU7/BaFivg440R7ktYR07/QXZi+i0grKbfhEBW1nU
*
*jkI2eZxT3vE4VIK7Yt2jr84JiCYmjL2b/w1DatXZM9Xoa3j9YHda5cKLOfCCIeTs
*
*I3beYI9UmSnidYaXpX7q4gfHME+A/1F/19L8jFvX+c7MXapdCdY/NUHXBCJFfBzg
*
*OBlXbPKhdjtEnx+Hg5Sq/Frsld6dKwF1CDMO96YoeXBdi58JkLL/CLyy1i7UcXTb
*
*SRy0Gbd3NWSAamWdpJDDg51UR6yRJdXjtnhpdQIDAQABAoIBAGs3/4bzgvvH428y
*
*UPU2ng0WxyuBY2XEzMgl6H04AAv95xjCI+tLKeQJ22S/8ho0alALzu8aoZJCydj8
*
*s/Au32AWfRLB6CxMz9i+w4YYiiYn/DZISMIEgoUHUaAPGugfWCsgvf0fw5lLfc7S
*
*U7d7ZJaiyghbHqP6TFFSyHPRvge0so+8eRvPMxIGdfJR3gagJqKB5JbTGAnQ5Kn2
*
*eb5flDOobmCfpLDfIYH9u94Yj671xymtNYXwWxic4gA+aqWJKaqkI8JL7bFdjvjn
*
*Jer5RHeXmY9UZtDhSrZWSEKniw3m02QPpgqhhhPr8xToNA/7G1/P9994fuDKKnRk
*
*edn3FEECgYEA8iTPuaNGswyx/3zCkOPHHu82CSoWRZQapegN0YoXKsCyEWcHgQJV
*
*jZlF39OK14+y4PWWPJ3AlkhrchAJbUbgpw0P+G1uiRmXVpqcaEI4xIFd8oSOG+Vr
*
*s06YZYUrb7C73mi8x3sXdOpmehMYdnSbuxrRXyk0MwpLO2PkC0wXzEUCgYEA62WY
*
*RuZMAHR4PEZA+sDBG6XzjZGw1QQvF7H6u+JOfgPbRgZ+NnLQ/ZpYiDvrJGqAp1B1
*
*NIj69zVBN0p7PuRg2v9I4tHlmWC4eyYnVCf3dM6Fhsyb7RC3MHXVNOErxRoHVNqL
*
*4iywSUnboJyvdyKc7S5wQ5gdM14HogD/i1FHs3ECgYBMuMcsfYRgJOydE82eFN25
*
*ene3jaNC5ntPB+ig9M0EWcvR4cAp6zBqTh8qnR9Hz5sQ1h+FE0K7GzUYDea+vg9e
*
*PrBJuXqla/tckF5wVlMgSBEZT1CrnBR02rlEqV4q5GeSP8NYvTKgc8iGc1hz59yT
*
*+xpNuYN1jJRru+m8fp6ntQKBgQDd7Iglv5TDkQqR+MHmJbdpM4lsXIBUM3+aXUc/
*
*vtm1YDlnyVNQTerOTKdOuP609FuaYfY9sy63xVNYpzWOU40kqiyy+qP1eAQ0xgGq
*
*C4v2aYXlUh1m4K10WILLOcYkKqfiza+3ad5BGgqfX1jlfpJn4bIhZ9WPygR0LXC+
*
*jcCFYQKBgQCelF/LIocwZ1ZW/Cx2OqMi/lkI56nLeBl7jRNiBSNIs0deN0cw4sHp
*
*BN9459NojAKBKJK1pyqajzrHae66V+8/2Zz2/gmTK1dDjznyw6TZmV3QyHTFhUtY
*
*NI7wvIG9K8gFaoSiGD/OLlLRaGiAdejKBsBx2hK73M58YQsgqIpdIQ==
*
*-----END RSA PRIVATE KEY-----*



### API Definition

:::ApiMethodV2
```json
{
  "tab": "examples",
  "url": "https://orca.pathfix.com/functions/text/sha256frompem",
  "name": "SHA to Base64 (Key) API",
  "method": "POST",
  "request": {
    "pathParameters": [],
    "queryParameters": [],
    "headerParameters": [],
    "bodyDataParameters": [],
    "formDataParameters": []
  },
  "results": {
    "languages": [
      {
        "id": "CJ9pAB1SjEn8ROCTQNBVC",
        "code": "{\n\t\"output\": \"....\"\n}",
        "language": "200"
      },
      {
        "id": "oAIFbLbE18KBrBRnvZPxa",
        "code": "{\n    \"message\": \"error\"\n}",
        "language": "404"
      }
    ],
    "selectedLanguageId": "CJ9pAB1SjEn8ROCTQNBVC"
  },
  "examples": {
    "languages": [
      {
        "id": "cIfmVJAWcqiEOX1_ZoPbx",
        "code": "{\r\n\t\"input\": \"<value signed by public key>\",\r\n\t\"key\": \"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\"\r\n}",
        "language": "json"
      }
    ],
    "selectedLanguageId": "cIfmVJAWcqiEOX1_ZoPbx"
  },
  "description": "Call the following API to hash your input from SHA to Base64 for private key certificates",
  "currentNewParameter": {
    "label": "Body Parameter",
    "value": "bodyDataParameters"
  }
}
```
:::




### Use Cases

Used in many banking/financial related API where a the signature has to be compared with uploaded public key certificate.