The Chilkat C++ static libs are distributed as .zip downloads. Within the .zip there is a README.html that provides vital information about what additional Microsoft libraries are needed for linking your application.
Nobody ever reads the REAME.html. 
If you find unresolved externals such as the following, you’ve forgotten to add crypt32.lib to your list of libraries for linking:
error LNK2001: unresolved external symbol __imp__CertVerifyRevocation@28
error LNK2001: unresolved external symbol __imp__CryptDecodeObject@28
error LNK2001: unresolved external symbol __imp__CertGetIntendedKeyUsage@16
error LNK2001: unresolved external symbol __imp__CertFreeCertificateChain@4
error LNK2001: unresolved external symbol __imp__CertFreeCertificateChain@4
error LNK2001: unresolved external symbol __imp__CertFreeCertificateChainEngine@4
error LNK2001: unresolved external symbol __imp__CertGetCertificateChain@32
error LNK2001: unresolved external symbol __imp__CertGetCertificateChain@32
error LNK2001: unresolved external symbol __imp__CertCreateCertificateChainEngine@8
error LNK2001: unresolved external symbol __imp__CertGetCertificateContextProperty@16
error LNK2001: unresolved external symbol __imp__CertCreateCertificateContext@12
error LNK2001: unresolved external symbol __imp__CertCreateCertificateContext@12
error LNK2001: unresolved external symbol __imp__CryptAcquireCertificatePrivateKey@24
error LNK2001: unresolved external symbol __imp__CryptAcquireCertificatePrivateKey@24
error LNK2001: unresolved external symbol __imp__CertDuplicateCertificateContext@4
error LNK2001: unresolved external symbol __imp__CertDuplicateCertificateContext@4
error LNK2001: unresolved external symbol __imp__CertDuplicateCertificateContext@4
error LNK2001: unresolved external symbol __imp__CertSetCertificateContextProperty@16
error LNK2001: unresolved external symbol __imp__CertSetCertificateContextProperty@16
error LNK2001: unresolved external symbol __imp__CertFreeCertificateContext@4
error LNK2001: unresolved external symbol __imp__CertFreeCertificateContext@4
error LNK2001: unresolved external symbol __imp__CertNameToStrA@20
error LNK2001: unresolved external symbol __imp__CryptSignMessage@28
error LNK2001: unresolved external symbol __imp__CryptEncodeObject@20
error LNK2001: unresolved external symbol __imp__CryptVerifyDetachedMessageSignature@32
error LNK2001: unresolved external symbol __imp__CryptDecodeMessage@52
error LNK2001: unresolved external symbol __imp__CryptDecryptMessage@24
error LNK2001: unresolved external symbol __imp__CryptEncryptMessage@28
error LNK2001: unresolved external symbol __imp__CryptVerifyMessageSignature@28
error LNK2001: unresolved external symbol __imp__CertCloseStore@8
error LNK2001: unresolved external symbol __imp__CertCloseStore@8
error LNK2001: unresolved external symbol __imp__CertOpenStore@20
error LNK2001: unresolved external symbol __imp__CertOpenStore@20
error LNK2001: unresolved external symbol __imp__CertOpenSystemStoreA@8
error LNK2001: unresolved external symbol __imp__CertVerifyCertificateChainPolicy@16
error LNK2001: unresolved external symbol __imp__CertDuplicateStore@4
error LNK2001: unresolved external symbol __imp__CertEnumCertificatesInStore@8
error LNK2001: unresolved external symbol __imp__CertFindCertificateInStore@24
error LNK2001: unresolved external symbol __imp__CertAddEncodedCertificateToStore@24
error LNK2001: unresolved external symbol __imp__CertAddCertificateContextToStore@16
error LNK2001: unresolved external symbol __imp__CertSaveStore@24
error LNK2001: unresolved external symbol __imp__CertDeleteCertificateFromStore@4
error LNK2001: unresolved external symbol __imp__CertGetSubjectCertificateFromStore@12
error LNK2001: unresolved external symbol __imp__CryptMsgClose@4
error LNK2001: unresolved external symbol __imp__CryptMsgGetParam@20
error LNK2001: unresolved external symbol __imp__CryptMsgUpdate@16
error LNK2001: unresolved external symbol __imp__CryptMsgOpenToDecode@24
error LNK2001: unresolved external symbol __imp__CertCreateSelfSignCertificate@32
error LNK2001: unresolved external symbol __imp__CertStrToNameA@28
error LNK2001: unresolved external symbol __imp__PFXExportCertStoreEx@20
error LNK2001: unresolved external symbol __imp__PFXImportCertStore@12
error LNK2001: unresolved external symbol __imp__PFXVerifyPassword@12
