sign_kalshi_request

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sign_kalshi_request()

Internal RSA-PSS Signing via OpenSSL System Call

Usage

sign_kalshi_request(timestamp, method, path)

Arguments

Argument	Description
timestamp	Character. A millisecond Unix timestamp string.
method	Character. The HTTP method in uppercase (e.g., “GET”, “POST”).
path	Character. The API endpoint path without query parameters.

Value

A base64-encoded string containing the RSA-PSS signature.

Description

Performs RSA-PSS signing using the system’s ‘openssl’ binary to generate the ‘KALSHI-ACCESS-SIGNATURE’ header.

Details

The R ‘openssl’ package does not expose RSA-PSS padding, so this function interfaces directly with the system’s ‘openssl’ installation.

Signature is generated using: - Message: ‘timestamp + method + path’ - Algorithm: SHA-256 - Padding: RSA-PSS - Salt Length: Equal to digest length (32 bytes)