in src/connection/BaseConnection.ts [239:246]
export function isCaFingerprintMatch (cert1: string | null, cert2: string | null): boolean {
if (typeof cert1 === 'string' && typeof cert2 === 'string') {
const c1 = cert1.toLowerCase().replace(/:/g, '')
const c2 = cert2.toLowerCase().replace(/:/g, '')
return c1 === c2
}
return cert1 === cert2
}