Signature Algorithm sha256

if:
appId: b2170558cd6b13febb1827db5185cfd9
appSecret: 18b22b824d560565f853c8cf4a58e2b6

params for payin

{
    "appId":      "b2170558cd6b13febb1827db5185cfd9",
    "merOrderNo": "LTJPD1159",
    "currency":   "INR",
    "amount":     "100",
    "returnUrl":  "https://www.example.com",
    "notifyUrl":  "https://www.example.com",
    "extra": {
        "name":   "test",
        "email":  "test@1234.com",
        "mobile": "911111111112"
    },
}

for sign string:

Sort by the Unicode of key. Then concatenate the parameters in the form of key1=value1&key2=value2&key3=value3. The same applies to the parameters in extra.

amount=100&appId=b2170558cd6b13febb1827db5185cfd9&currency=INR&extra=email=test@1234.com&mobile=911111111112&name=test&merOrderNo=LTJPD1159&notifyUrl=https://www.example.com&returnUrl=https://www.example.com&key=18b22b824d560565f853c8cf4a58e2b6

got sign: a6c1f5216ce7f44e10fa6beccc22de58caa947eae3f1c3a416f29e7594a2b95b

add sign key to params

{
    "appId":      "b2170558cd6b13febb1827db5185cfd9",
    "merOrderNo": "LTJPD1159",
    "currency":   "INR",
    "amount":     "100",
    "returnUrl":  "https://www.example.com",
    "notifyUrl":  "https://www.example.com",
    "extra": {
        "name":   "test",
        "email":  "test@1234.com",
        "mobile": "911111111112"
    },
    "sign": "a6c1f5216ce7f44e10fa6beccc22de58caa947eae3f1c3a416f29e7594a2b95b"
}

Signature Example

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Signature Example

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